124021231 has 4 divisors (see below), whose sum is σ = 125591200. Its totient is φ = 122451264.

The previous prime is 124021213. The next prime is 124021241. The reversal of 124021231 is 132120421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132120421 = 71 ⋅1860851.

It is a de Polignac number, because none of the positive numbers 2^k-124021231 is a prime.

It is a super-2 number, since 2×124021231² = 30762531477510722, 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 (124021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784866 + ... + 785023.

It is an arithmetic number, because the mean of its divisors is an integer number (31397800).

Almost surely, 2^124021231 is an apocalyptic number.

124021231 is a deficient number, since it is larger than the sum of its proper divisors (1569969).

124021231 is an equidigital number, since it uses as much as digits as its factorization.

124021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569968.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 124021231 is about 11136.4819848999. The cubic root of 124021231 is about 498.6915535895.

Adding to 124021231 its reverse (132120421), we get a palindrome (256141652).

The spelling of 124021231 in words is "one hundred twenty-four million, twenty-one thousand, two hundred thirty-one".