42971523504 has 160 divisors (see below), whose sum is σ = 137447869440. Its totient is φ = 11265094656.

The previous prime is 42971523503. The next prime is 42971523587. The reversal of 42971523504 is 40532517924.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (42971523503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 700002 + ... + 758910.

It is an arithmetic number, because the mean of its divisors is an integer number (859049184).

Almost surely, 2^42971523504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42971523504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68723934720).

42971523504 is an abundant number, since it is smaller than the sum of its proper divisors (94476345936).

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

42971523504 is a wasteful number, since it uses less digits than its factorization.

42971523504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59107 (or 59101 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 42971523504 in words is "forty-two billion, nine hundred seventy-one million, five hundred twenty-three thousand, five hundred four".