124453621 has 4 divisors (see below), whose sum is σ = 129864672. Its totient is φ = 119042572.

The previous prime is 124453613. The next prime is 124453633. The reversal of 124453621 is 126354421.

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.

It is not a de Polignac number, because 124453621 - 2³ = 124453613 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 124453621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124453601) 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, 2705491 + ... + 2705536.

It is an arithmetic number, because the mean of its divisors is an integer number (32466168).

Almost surely, 2^124453621 is an apocalyptic number.

It is an amenable number.

124453621 is a deficient number, since it is larger than the sum of its proper divisors (5411051).

124453621 is an equidigital number, since it uses as much as digits as its factorization.

124453621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411050.

The product of its digits is 5760, while the sum is 28.

The square root of 124453621 is about 11155.8783159373. The cubic root of 124453621 is about 499.2704306415.

The spelling of 124453621 in words is "one hundred twenty-four million, four hundred fifty-three thousand, six hundred twenty-one".