72421252302 has 64 divisors (see below), whose sum is σ = 175972032000. Its totient is φ = 19408636800.

The previous prime is 72421252273. The next prime is 72421252349. The reversal of 72421252302 is 20325212427.

It is a self number, because there is not a number n which added to its sum of digits gives 72421252302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368677 + ... + 529872.

It is an arithmetic number, because the mean of its divisors is an integer number (2749563000).

Almost surely, 2^72421252302 is an apocalyptic number.

72421252302 is an abundant number, since it is smaller than the sum of its proper divisors (103550779698).

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

72421252302 is a wasteful number, since it uses less digits than its factorization.

72421252302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898681.

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 72421252302 its reverse (20325212427), we get a palindrome (92746464729).

It can be divided in two parts, 7242125 and 2302, that added together give a palindrome (7244427).

The spelling of 72421252302 in words is "seventy-two billion, four hundred twenty-one million, two hundred fifty-two thousand, three hundred two".