124121231 has 4 divisors (see below), whose sum is σ = 133669032. Its totient is φ = 114573432.

The previous prime is 124121213. The next prime is 124121251. The reversal of 124121231 is 132121421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124121231 - 2¹⁴ = 124104847 is a prime.

It is a super-2 number, since 2×124121231² = 30812159969910722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124121201) 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, 4773881 + ... + 4773906.

It is an arithmetic number, because the mean of its divisors is an integer number (33417258).

Almost surely, 2^124121231 is an apocalyptic number.

124121231 is a deficient number, since it is larger than the sum of its proper divisors (9547801).

124121231 is an equidigital number, since it uses as much as digits as its factorization.

124121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547800.

The product of its digits is 96, while the sum is 17.

The square root of 124121231 is about 11140.9708284332. The cubic root of 124121231 is about 498.8255515014.

Adding to 124121231 its reverse (132121421), we get a palindrome (256242652).

The spelling of 124121231 in words is "one hundred twenty-four million, one hundred twenty-one thousand, two hundred thirty-one".