4542605932921 has 9 divisors (see below), whose sum is σ = 5284273236399. Its totient is φ = 3893649440184.

The previous prime is 4542605932853. The next prime is 4542605932973. The reversal of 4542605932921 is 1292395062454.

It is a happy number.

The square root of 4542605932921 is 2131339.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3462744114025 + 1079861818896 = 1860845^2 + 1039164^2 .

It is not a de Polignac number, because 4542605932921 - 2¹⁵ = 4542605900153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4542605932621) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14767135 + ... + 15071611.

It is an arithmetic number, because the mean of its divisors is an integer number (587141470711).

Almost surely, 2^{4542605932921} is an apocalyptic number.

4542605932921 is the 2131339-th square number.

4542605932921 is the 1065670-th centered octagonal number.

It is an amenable number.

4542605932921 is a deficient number, since it is larger than the sum of its proper divisors (741667303478).

4542605932921 is an frugal number, since it uses more digits than its factorization.

4542605932921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608968 (or 304484 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 4542605932921 in words is "four trillion, five hundred forty-two billion, six hundred five million, nine hundred thirty-two thousand, nine hundred twenty-one".