124694440641 has 27 divisors (see below), whose sum is σ = 186160779363. Its totient is φ = 80426838960.

The previous prime is 124694440589. The next prime is 124694440657. The reversal of 124694440641 is 146044496421.

It is a happy number.

The square root of 124694440641 is 353121.

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., 1636607025 + 123057833616 = 40455^2 + 350796^2 .

It is not a de Polignac number, because 124694440641 - 2²⁵ = 124660886209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124694440691) 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, 32838355 + ... + 32842151.

Almost surely, 2^124694440641 is an apocalyptic number.

124694440641 is the 353121-st square number.

124694440641 is the 176561-st centered octagonal number.

It is an amenable number.

124694440641 is a deficient number, since it is larger than the sum of its proper divisors (61466338722).

124694440641 is an frugal number, since it uses more digits than its factorization.

124694440641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 124694440641 in words is "one hundred twenty-four billion, six hundred ninety-four million, four hundred forty thousand, six hundred forty-one".