42492831 has 8 divisors (see below), whose sum is σ = 56688000. Its totient is φ = 28313112.

The previous prime is 42492823. The next prime is 42492839. The reversal of 42492831 is 13829424.

42492831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42492823) and next prime (42492839).

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

It is not a de Polignac number, because 42492831 - 2³ = 42492823 is a prime.

It is a super-2 number, since 2×42492831² = 3611281372789122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42492792 and 42492801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42492839) 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 7 ways as a sum of consecutive naturals, for example, 6636 + ... + 11358.

It is an arithmetic number, because the mean of its divisors is an integer number (7086000).

Almost surely, 2^42492831 is an apocalyptic number.

42492831 is a deficient number, since it is larger than the sum of its proper divisors (14195169).

42492831 is a wasteful number, since it uses less digits than its factorization.

42492831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7725.

The product of its digits is 13824, while the sum is 33.

The square root of 42492831 is about 6518.6525448132. The cubic root of 42492831 is about 348.9569791772.

The spelling of 42492831 in words is "forty-two million, four hundred ninety-two thousand, eight hundred thirty-one".