42512785 has 16 divisors (see below), whose sum is σ = 61372800. Its totient is φ = 27616896.

The previous prime is 42512761. The next prime is 42512803. The reversal of 42512785 is 58721524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42512785 - 2¹¹ = 42510737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42512785.

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, 31300 + ... + 32629.

It is an arithmetic number, because the mean of its divisors is an integer number (3835800).

Almost surely, 2^42512785 is an apocalyptic number.

It is an amenable number.

42512785 is a deficient number, since it is larger than the sum of its proper divisors (18860015).

42512785 is a wasteful number, since it uses less digits than its factorization.

42512785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63960.

The product of its digits is 22400, while the sum is 34.

The square root of 42512785 is about 6520.1828962077. The cubic root of 42512785 is about 349.0115922948.

The spelling of 42512785 in words is "forty-two million, five hundred twelve thousand, seven hundred eighty-five".