4542121620388 has 48 divisors (see below), whose sum is σ = 9175497891840. Its totient is φ = 1945696960800.

The previous prime is 4542121620373. The next prime is 4542121620389. The reversal of 4542121620388 is 8830261212454.

It is a super-2 number, since 2×4542121620388² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4542121620389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14063256 + ... + 14382607.

It is an arithmetic number, because the mean of its divisors is an integer number (191156206080).

Almost surely, 2^{4542121620388} is an apocalyptic number.

It is an amenable number.

4542121620388 is an abundant number, since it is smaller than the sum of its proper divisors (4633376271452).

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

4542121620388 is a wasteful number, since it uses less digits than its factorization.

4542121620388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446088 (or 28446086 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 4542121620388 in words is "four trillion, five hundred forty-two billion, one hundred twenty-one million, six hundred twenty thousand, three hundred eighty-eight".