124353921 has 4 divisors (see below), whose sum is σ = 165805232. Its totient is φ = 82902612.

The previous prime is 124353919. The next prime is 124353923. The reversal of 124353921 is 129353421.

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 an interprime number because it is at equal distance from previous prime (124353919) and next prime (124353923).

It is not a de Polignac number, because 124353921 - 2¹ = 124353919 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124353923) 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, 20725651 + ... + 20725656.

It is an arithmetic number, because the mean of its divisors is an integer number (41451308).

Almost surely, 2^124353921 is an apocalyptic number.

It is an amenable number.

124353921 is a deficient number, since it is larger than the sum of its proper divisors (41451311).

124353921 is an equidigital number, since it uses as much as digits as its factorization.

124353921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41451310.

The product of its digits is 6480, while the sum is 30.

The square root of 124353921 is about 11151.4089244364. The cubic root of 124353921 is about 499.1370729038.

The spelling of 124353921 in words is "one hundred twenty-four million, three hundred fifty-three thousand, nine hundred twenty-one".