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420231039 = 31031359971
BaseRepresentation
bin11001000011000…
…011011101111111
31002021201221121120
4121003003131333
51330034343124
6105411002023
713261622244
oct3103033577
91067657546
10420231039
111a6233888
12b8899313
13690a5c27
143db4d5cb
1526d5cd79
hex190c377f

420231039 has 8 divisors (see below), whose sum is σ = 565748352. Its totient is φ = 277433880.

The previous prime is 420231001. The next prime is 420231043. The reversal of 420231039 is 930132024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420231039 - 29 = 420230527 is a prime.

It is a super-3 number, since 3×4202310393 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420231439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679677 + ... + 680294.

It is an arithmetic number, because the mean of its divisors is an integer number (70718544).

Almost surely, 2420231039 is an apocalyptic number.

420231039 is a deficient number, since it is larger than the sum of its proper divisors (145517313).

420231039 is a wasteful number, since it uses less digits than its factorization.

420231039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360077.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 420231039 is about 20499.5375313688. The cubic root of 420231039 is about 749.0245327237.

The spelling of 420231039 in words is "four hundred twenty million, two hundred thirty-one thousand, thirty-nine".

Divisors: 1 3 103 309 1359971 4079913 140077013 420231039