42520786 has 32 divisors (see below), whose sum is σ = 82270080. Its totient is φ = 15993600.

The previous prime is 42520783. The next prime is 42520831. The reversal of 42520786 is 68702524.

It is not an unprimeable number, because it can be changed into a prime (42520783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (2570940).

Almost surely, 2^42520786 is an apocalyptic number.

42520786 is a deficient number, since it is larger than the sum of its proper divisors (39749294).

42520786 is a wasteful number, since it uses less digits than its factorization.

42520786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 42520786 is about 6520.7964237507. The cubic root of 42520786 is about 349.0334858388.

The spelling of 42520786 in words is "forty-two million, five hundred twenty thousand, seven hundred eighty-six".