124420321 has 4 divisors (see below), whose sum is σ = 126529200. Its totient is φ = 122311444.

The previous prime is 124420319. The next prime is 124420333. The reversal of 124420321 is 123024421.

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 a cyclic number.

It is not a de Polignac number, because 124420321 - 2¹ = 124420319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124460321) 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, 1054351 + ... + 1054468.

It is an arithmetic number, because the mean of its divisors is an integer number (31632300).

Almost surely, 2^124420321 is an apocalyptic number.

It is an amenable number.

124420321 is a deficient number, since it is larger than the sum of its proper divisors (2108879).

124420321 is an equidigital number, since it uses as much as digits as its factorization.

124420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108878.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 124420321 is about 11154.3857293891. The cubic root of 124420321 is about 499.2258968137.

Adding to 124420321 its reverse (123024421), we get a palindrome (247444742).

The spelling of 124420321 in words is "one hundred twenty-four million, four hundred twenty thousand, three hundred twenty-one".