124594132721 has 4 divisors (see below), whose sum is σ = 124598100132. Its totient is φ = 124590165312.

The previous prime is 124594132709. The next prime is 124594132723. The reversal of 124594132721 is 127231495421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19631092321 + 104963040400 = 140111^2 + 323980^2 .

It is a cyclic number.

It is not a de Polignac number, because 124594132721 - 2¹⁴ = 124594116337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124594132723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936220 + ... + 1999533.

It is an arithmetic number, because the mean of its divisors is an integer number (31149525033).

Almost surely, 2^124594132721 is an apocalyptic number.

It is an amenable number.

124594132721 is a deficient number, since it is larger than the sum of its proper divisors (3967411).

124594132721 is an equidigital number, since it uses as much as digits as its factorization.

124594132721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967410.

The product of its digits is 120960, while the sum is 41.

The spelling of 124594132721 in words is "one hundred twenty-four billion, five hundred ninety-four million, one hundred thirty-two thousand, seven hundred twenty-one".