72031242032 has 20 divisors (see below), whose sum is σ = 139919310960. Its totient is φ = 35923032768.

The previous prime is 72031242007. The next prime is 72031242037. The reversal of 72031242032 is 23024213027.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72031241992 and 72031242010.

It is not an unprimeable number, because it can be changed into a prime (72031242037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5780348 + ... + 5792795.

It is an arithmetic number, because the mean of its divisors is an integer number (6995965548).

Almost surely, 2^72031242032 is an apocalyptic number.

It is an amenable number.

72031242032 is a deficient number, since it is larger than the sum of its proper divisors (67888068928).

72031242032 is a wasteful number, since it uses less digits than its factorization.

72031242032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11573540 (or 11573534 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 72031242032 its reverse (23024213027), we get a palindrome (95055455059).

The spelling of 72031242032 in words is "seventy-two billion, thirty-one million, two hundred forty-two thousand, thirty-two".