124243321 has 4 divisors (see below), whose sum is σ = 126349200. Its totient is φ = 122137444.

The previous prime is 124243303. The next prime is 124243331. The reversal of 124243321 is 123342421.

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: 123342421 = 281 ⋅438941.

It is a cyclic number.

It is not a de Polignac number, because 124243321 - 2⁷ = 124243193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124243292 and 124243301.

It is not an unprimeable number, because it can be changed into a prime (124243331) 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, 1052851 + ... + 1052968.

It is an arithmetic number, because the mean of its divisors is an integer number (31587300).

Almost surely, 2^124243321 is an apocalyptic number.

It is an amenable number.

124243321 is a deficient number, since it is larger than the sum of its proper divisors (2105879).

124243321 is an equidigital number, since it uses as much as digits as its factorization.

124243321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105878.

The product of its digits is 1152, while the sum is 22.

The square root of 124243321 is about 11146.4488066828. The cubic root of 124243321 is about 498.9890520126.

Adding to 124243321 its reverse (123342421), we get a palindrome (247585742).

The spelling of 124243321 in words is "one hundred twenty-four million, two hundred forty-three thousand, three hundred twenty-one".