152872398121 has 3 divisors (see below), whose sum is σ = 152872789111. Its totient is φ = 152872007132.

The previous prime is 152872398097. The next prime is 152872398179. The reversal of 152872398121 is 121893278251.

The square root of 152872398121 is 390989.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121893278251 = 14947 ⋅8155033.

It can be written as a sum of positive squares in only one way, i.e., 116322605721 + 36549792400 = 341061^2 + 191180^2 .

It is not a de Polignac number, because 152872398121 - 2⁵ = 152872398089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152872398191) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 195495 + ... + 586483.

Almost surely, 2^152872398121 is an apocalyptic number.

152872398121 is the 390989-th square number.

152872398121 is the 195495-th centered octagonal number.

It is an amenable number.

152872398121 is a deficient number, since it is larger than the sum of its proper divisors (390990).

152872398121 is an frugal number, since it uses more digits than its factorization.

152872398121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781978 (or 390989 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

Multiplying 152872398121 by its sum of digits (49), we get a square (7490747507929 = 2736923²).

The spelling of 152872398121 in words is "one hundred fifty-two billion, eight hundred seventy-two million, three hundred ninety-eight thousand, one hundred twenty-one".