42520680 has 64 divisors (see below), whose sum is σ = 141739200. Its totient is φ = 11338560.

The previous prime is 42520661. The next prime is 42520691. The reversal of 42520680 is 8602524.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 18606 + ... + 20765.

It is an arithmetic number, because the mean of its divisors is an integer number (2214675).

Almost surely, 2^42520680 is an apocalyptic number.

42520680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42520680 is an abundant number, since it is smaller than the sum of its proper divisors (99218520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42520680 is a wasteful number, since it uses less digits than its factorization.

42520680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39391 (or 39381 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 42520680 is about 6520.7882959041. The cubic root of 42520680 is about 349.0331958036.

The spelling of 42520680 in words is "forty-two million, five hundred twenty thousand, six hundred eighty".