42640600240 has 80 divisors (see below), whose sum is σ = 116065696320. Its totient is φ = 14263050240.

The previous prime is 42640600181. The next prime is 42640600297. The reversal of 42640600240 is 4200604624.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 42640600199 and 42640600208.

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, 905625 + ... + 951544.

It is an arithmetic number, because the mean of its divisors is an integer number (1450821204).

Almost surely, 2^42640600240 is an apocalyptic number.

42640600240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42640600240 is an abundant number, since it is smaller than the sum of its proper divisors (73425096080).

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

42640600240 is a wasteful number, since it uses less digits than its factorization.

42640600240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857230 (or 1857224 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 42640600240 in words is "forty-two billion, six hundred forty million, six hundred thousand, two hundred forty".