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421143246 = 233193113241
BaseRepresentation
bin11001000110100…
…010001011001110
31002100110021221000
4121012202023032
51330303040441
6105442321130
713302441606
oct3106421316
91070407830
10421143246
111a67a7177
12b90591a6
13693351b4
143dd09c06
1526e8d2b6
hex191a22ce

421143246 has 64 divisors (see below), whose sum is σ = 1016985600. Its totient is φ = 128692800.

The previous prime is 421143241. The next prime is 421143253. The reversal of 421143246 is 642341124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421143241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25186 + ... + 38426.

It is an arithmetic number, because the mean of its divisors is an integer number (15890400).

Almost surely, 2421143246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421143246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508492800).

421143246 is an abundant number, since it is smaller than the sum of its proper divisors (595842354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421143246 is a wasteful number, since it uses less digits than its factorization.

421143246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13302 (or 13296 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 421143246 is about 20521.7749232370. The cubic root of 421143246 is about 749.5661170425.

The spelling of 421143246 in words is "four hundred twenty-one million, one hundred forty-three thousand, two hundred forty-six".

Divisors: 1 2 3 6 9 18 19 27 31 38 54 57 62 93 114 171 186 279 342 513 558 589 837 1026 1178 1674 1767 3534 5301 10602 13241 15903 26482 31806 39723 79446 119169 238338 251579 357507 410471 503158 715014 754737 820942 1231413 1509474 2264211 2462826 3694239 4528422 6792633 7388478 7798949 11082717 13585266 15597898 22165434 23396847 46793694 70190541 140381082 210571623 421143246