42495831 has 12 divisors (see below), whose sum is σ = 70151952. Its totient is φ = 24283296.

The previous prime is 42495829. The next prime is 42495839. The reversal of 42495831 is 13859424.

It is not a de Polignac number, because 42495831 - 2¹ = 42495829 is a prime.

It is a super-2 number, since 2×42495831² = 3611791304761122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42495839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337206 + ... + 337331.

It is an arithmetic number, because the mean of its divisors is an integer number (5845996).

Almost surely, 2^42495831 is an apocalyptic number.

42495831 is a deficient number, since it is larger than the sum of its proper divisors (27656121).

42495831 is a wasteful number, since it uses less digits than its factorization.

42495831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674550 (or 674547 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 42495831 is about 6518.8826496571. The cubic root of 42495831 is about 348.9651911217.

The spelling of 42495831 in words is "forty-two million, four hundred ninety-five thousand, eight hundred thirty-one".