42645975 has 24 divisors (see below), whose sum is σ = 74221440. Its totient is φ = 21546720.

The previous prime is 42645961. The next prime is 42645989. The reversal of 42645975 is 57954624.

It is an interprime number because it is at equal distance from previous prime (42645961) and next prime (42645989).

It is not a de Polignac number, because 42645975 - 2⁴ = 42645959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13539 + ... + 16388.

It is an arithmetic number, because the mean of its divisors is an integer number (3092560).

Almost surely, 2^42645975 is an apocalyptic number.

42645975 is a deficient number, since it is larger than the sum of its proper divisors (31575465).

42645975 is a wasteful number, since it uses less digits than its factorization.

42645975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29959 (or 29954 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 42645975 is about 6530.3885795563. The cubic root of 42645975 is about 349.3756897739.

The spelling of 42645975 in words is "forty-two million, six hundred forty-five thousand, nine hundred seventy-five".