42513532440 has 64 divisors (see below), whose sum is σ = 127664674560. Its totient is φ = 11325912960.

The previous prime is 42513532417. The next prime is 42513532447. The reversal of 42513532440 is 4423531524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42513532447) 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, 48094 + ... + 295533.

It is an arithmetic number, because the mean of its divisors is an integer number (1994760540).

Almost surely, 2^42513532440 is an apocalyptic number.

42513532440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42513532440 is an abundant number, since it is smaller than the sum of its proper divisors (85151142120).

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

42513532440 is a wasteful number, since it uses less digits than its factorization.

42513532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344672 (or 344668 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

The spelling of 42513532440 in words is "forty-two billion, five hundred thirteen million, five hundred thirty-two thousand, four hundred forty".