42350931 has 40 divisors (see below), whose sum is σ = 73053024. Its totient is φ = 23950080.

The previous prime is 42350899. The next prime is 42350939. The reversal of 42350931 is 13905324.

It is not a de Polignac number, because 42350931 - 2⁵ = 42350899 is a prime.

It is a super-2 number, since 2×42350931² = 3587202713133522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42350895 and 42350904.

It is not an unprimeable number, because it can be changed into a prime (42350939) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63741 + ... + 64401.

Almost surely, 2^42350931 is an apocalyptic number.

42350931 is a deficient number, since it is larger than the sum of its proper divisors (30702093).

42350931 is a wasteful number, since it uses less digits than its factorization.

42350931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 42350931 is about 6507.7592917993. The cubic root of 42350931 is about 348.5681118831.

The spelling of 42350931 in words is "forty-two million, three hundred fifty thousand, nine hundred thirty-one".