309967042 has 32 divisors (see below), whose sum is σ = 591523200. Its totient is φ = 120763440.

The previous prime is 309967039. The next prime is 309967079. The reversal of 309967042 is 240769903.

It is a junction number, because it is equal to n+sod(n) for n = 309966986 and 309967004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12993 + ... + 28084.

It is an arithmetic number, because the mean of its divisors is an integer number (18485100).

Almost surely, 2^309967042 is an apocalyptic number.

309967042 is a deficient number, since it is larger than the sum of its proper divisors (281556158).

309967042 is a wasteful number, since it uses less digits than its factorization.

309967042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41111 (or 41097 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 309967042 is about 17605.8808924745. The cubic root of 309967042 is about 676.7659597983.

The spelling of 309967042 in words is "three hundred nine million, nine hundred sixty-seven thousand, forty-two".