42508965 has 16 divisors (see below), whose sum is σ = 68103936. Its totient is φ = 22641600.

The previous prime is 42508957. The next prime is 42508979. The reversal of 42508965 is 56980524.

It is not a de Polignac number, because 42508965 - 2³ = 42508957 is a prime.

It is a Curzon number.

It is a congruent number.

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, 14580 + ... + 17250.

It is an arithmetic number, because the mean of its divisors is an integer number (4256496).

Almost surely, 2^42508965 is an apocalyptic number.

It is an amenable number.

42508965 is a deficient number, since it is larger than the sum of its proper divisors (25594971).

42508965 is a wasteful number, since it uses less digits than its factorization.

42508965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 42508965 is about 6519.8899530590. The cubic root of 42508965 is about 349.0011384653.

The spelling of 42508965 in words is "forty-two million, five hundred eight thousand, nine hundred sixty-five".