42520765 has 32 divisors (see below), whose sum is σ = 62853120. Its totient is φ = 26961984.

The previous prime is 42520741. The next prime is 42520771. The reversal of 42520765 is 56702524.

It is not a de Polignac number, because 42520765 - 2¹³ = 42512573 is a prime.

It is a congruent number.

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, 27852 + ... + 29338.

It is an arithmetic number, because the mean of its divisors is an integer number (1964160).

Almost surely, 2^42520765 is an apocalyptic number.

It is an amenable number.

42520765 is a deficient number, since it is larger than the sum of its proper divisors (20332355).

42520765 is a wasteful number, since it uses less digits than its factorization.

42520765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 42520765 is about 6520.7948135178. The cubic root of 42520765 is about 349.0334283790.

The spelling of 42520765 in words is "forty-two million, five hundred twenty thousand, seven hundred sixty-five".