124640031 has 4 divisors (see below), whose sum is σ = 166186712. Its totient is φ = 83093352.

The previous prime is 124639993. The next prime is 124640077. The reversal of 124640031 is 130046421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130046421 = 3 ⋅43348807.

It is not a de Polignac number, because 124640031 - 2¹⁰ = 124639007 is a prime.

It is a super-2 number, since 2×124640031² = 31070274655361922, 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 (124640431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20773336 + ... + 20773341.

It is an arithmetic number, because the mean of its divisors is an integer number (41546678).

Almost surely, 2^124640031 is an apocalyptic number.

124640031 is a deficient number, since it is larger than the sum of its proper divisors (41546681).

124640031 is an equidigital number, since it uses as much as digits as its factorization.

124640031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41546680.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 124640031 is about 11164.2299779250. The cubic root of 124640031 is about 499.5195798742.

Adding to 124640031 its reverse (130046421), we get a palindrome (254686452).

The spelling of 124640031 in words is "one hundred twenty-four million, six hundred forty thousand, thirty-one".