42365915 has 32 divisors (see below), whose sum is σ = 55944000. Its totient is φ = 30689280.

The previous prime is 42365891. The next prime is 42365923. The reversal of 42365915 is 51956324.

It is not a de Polignac number, because 42365915 - 2¹⁸ = 42103771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284261 + ... + 284409.

It is an arithmetic number, because the mean of its divisors is an integer number (1748250).

Almost surely, 2^42365915 is an apocalyptic number.

42365915 is a deficient number, since it is larger than the sum of its proper divisors (13578085).

42365915 is a wasteful number, since it uses less digits than its factorization.

42365915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 32400, while the sum is 35.

The square root of 42365915 is about 6508.9104310937. The cubic root of 42365915 is about 348.6092154954.

The spelling of 42365915 in words is "forty-two million, three hundred sixty-five thousand, nine hundred fifteen".