42292431 has 6 divisors (see below), whose sum is σ = 61089080. Its totient is φ = 28194948.

The previous prime is 42292427. The next prime is 42292441. The reversal of 42292431 is 13429224.

42292431 is a `hidden beast` number, since 4 + 229 + 2 + 431 = 666.

42292431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42292431 - 2² = 42292427 is a prime.

It is a super-2 number, since 2×42292431² = 3577299439779522, 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 = 42292395 and 42292404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42292421) 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 5 ways as a sum of consecutive naturals, for example, 2349571 + ... + 2349588.

Almost surely, 2^42292431 is an apocalyptic number.

42292431 is a deficient number, since it is larger than the sum of its proper divisors (18796649).

42292431 is a wasteful number, since it uses less digits than its factorization.

42292431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699165 (or 4699162 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 42292431 is about 6503.2631040117. The cubic root of 42292431 is about 348.4075437430.

The spelling of 42292431 in words is "forty-two million, two hundred ninety-two thousand, four hundred thirty-one".