145932404121 has 27 divisors (see below), whose sum is σ = 245219628693. Its totient is φ = 83385361080.

The previous prime is 145932404113. The next prime is 145932404141. The reversal of 145932404121 is 121404239541.

The square root of 145932404121 is 382011.

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

145932404121 is a `hidden beast` number, since 1 + 4 + 593 + 2 + 4 + 0 + 41 + 21 = 666.

It is not a de Polignac number, because 145932404121 - 2³ = 145932404113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145932404141) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8013136 + ... + 8031326.

Almost surely, 2^145932404121 is an apocalyptic number.

145932404121 is the 382011-st square number.

145932404121 is the 191006-th centered octagonal number.

It is an amenable number.

145932404121 is a deficient number, since it is larger than the sum of its proper divisors (99287224572).

145932404121 is an frugal number, since it uses more digits than its factorization.

145932404121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36402 (or 18201 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Multiplying 145932404121 by its sum of digits (36), we get a square (5253566548356 = 2292066²).

The spelling of 145932404121 in words is "one hundred forty-five billion, nine hundred thirty-two million, four hundred four thousand, one hundred twenty-one".