124320214621 has 4 divisors (see below), whose sum is σ = 124321880992. Its totient is φ = 124318548252.

The previous prime is 124320214519. The next prime is 124320214639. The reversal of 124320214621 is 126412023421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126412023421 = 11953 ⋅10575757.

It is a cyclic number.

It is not a de Polignac number, because 124320214621 - 2²⁵ = 124286660189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124320214621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124320214661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715761 + ... + 872326.

It is an arithmetic number, because the mean of its divisors is an integer number (31080470248).

Almost surely, 2^124320214621 is an apocalyptic number.

It is an amenable number.

124320214621 is a deficient number, since it is larger than the sum of its proper divisors (1666371).

124320214621 is an equidigital number, since it uses as much as digits as its factorization.

124320214621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666370.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 124320214621 in words is "one hundred twenty-four billion, three hundred twenty million, two hundred fourteen thousand, six hundred twenty-one".