240922923921 has 9 divisors (see below), whose sum is σ = 348001905979. Its totient is φ = 160614300936.

The previous prime is 240922923889. The next prime is 240922923931. The reversal of 240922923921 is 129329229042.

The square root of 240922923921 is 490839.

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

240922923921 is a `hidden beast` number, since 2 + 409 + 2 + 2 + 9 + 239 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 147997937025 + 92924986896 = 384705^2 + 304836^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 240922923921 - 2⁵ = 240922923889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240922923931) 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, 1390711 + ... + 1554323.

Almost surely, 2^240922923921 is an apocalyptic number.

240922923921 is the 490839-th square number.

240922923921 is the 245420-th centered octagonal number.

It is an amenable number.

240922923921 is a deficient number, since it is larger than the sum of its proper divisors (107078982058).

240922923921 is an frugal number, since it uses more digits than its factorization.

240922923921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327232 (or 163616 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 240922923921 in words is "two hundred forty billion, nine hundred twenty-two million, nine hundred twenty-three thousand, nine hundred twenty-one".