42900431 has 6 divisors (see below), whose sum is σ = 49904640. Its totient is φ = 36771756.

The previous prime is 42900413. The next prime is 42900433. The reversal of 42900431 is 13400924.

It is a de Polignac number, because none of the positive numbers 2^k-42900431 is a prime.

It is a super-2 number, since 2×42900431² = 3680893959971522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42900397 and 42900406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42900433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437711 + ... + 437808.

It is an arithmetic number, because the mean of its divisors is an integer number (8317440).

Almost surely, 2^42900431 is an apocalyptic number.

42900431 is a deficient number, since it is larger than the sum of its proper divisors (7004209).

42900431 is an equidigital number, since it uses as much as digits as its factorization.

42900431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875533 (or 875526 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42900431 is about 6549.8420591645. The cubic root of 42900431 is about 350.0691863227.

The spelling of 42900431 in words is "forty-two million, nine hundred thousand, four hundred thirty-one".