30120442055772 has 48 divisors (see below), whose sum is σ = 74712508752000. Its totient is φ = 9417543105600.

The previous prime is 30120442055719. The next prime is 30120442055903. The reversal of 30120442055772 is 27755024402103.

It is a congruent number.

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, 653973022 + ... + 654019077.

It is an arithmetic number, because the mean of its divisors is an integer number (1556510599000).

Almost surely, 2^{30120442055772} is an apocalyptic number.

It is an amenable number.

30120442055772 is an abundant number, since it is smaller than the sum of its proper divisors (44592066696228).

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

30120442055772 is a wasteful number, since it uses less digits than its factorization.

30120442055772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307992226 (or 1307992224 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

Adding to 30120442055772 its reverse (27755024402103), we get a palindrome (57875466457875).

The spelling of 30120442055772 in words is "thirty trillion, one hundred twenty billion, four hundred forty-two million, fifty-five thousand, seven hundred seventy-two".