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421241430 = 23579177739
BaseRepresentation
bin11001000110111…
…010001001010110
31002100122021121110
4121012322021112
51330314211210
6105444355450
713303331061
oct3106721126
91070567543
10421241430
111a6863a15
12b90a5b86
136936aaac
143dd338d8
1526eac420
hex191ba256

421241430 has 32 divisors (see below), whose sum is σ = 1023782400. Its totient is φ = 110908512.

The previous prime is 421241413. The next prime is 421241441. The reversal of 421241430 is 34142124.

It is a junction number, because it is equal to n+sod(n) for n = 421241397 and 421241406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86500 + ... + 91239.

It is an arithmetic number, because the mean of its divisors is an integer number (31993200).

Almost surely, 2421241430 is an apocalyptic number.

421241430 is an abundant number, since it is smaller than the sum of its proper divisors (602540970).

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

421241430 is a wasteful number, since it uses less digits than its factorization.

421241430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177828.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421241430 is about 20524.1669745693. The cubic root of 421241430 is about 749.6243630050.

Adding to 421241430 its reverse (34142124), we get a palindrome (455383554).

The spelling of 421241430 in words is "four hundred twenty-one million, two hundred forty-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 79 158 237 395 474 790 1185 2370 177739 355478 533217 888695 1066434 1777390 2666085 5332170 14041381 28082762 42124143 70206905 84248286 140413810 210620715 421241430