124115731 has 2 divisors, whose sum is σ = 124115732. Its totient is φ = 124115730.

The previous prime is 124115729. The next prime is 124115773. The reversal of 124115731 is 137511421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124115731 - 2¹ = 124115729 is a prime.

It is a super-2 number, since 2×124115731² = 30809429363328722, which contains 22 as substring.

Together with 124115729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 124115696 and 124115705.

It is not a weakly prime, because it can be changed into another prime (124115711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62057865 + 62057866.

It is an arithmetic number, because the mean of its divisors is an integer number (62057866).

Almost surely, 2^124115731 is an apocalyptic number.

124115731 is a deficient number, since it is larger than the sum of its proper divisors (1).

124115731 is an equidigital number, since it uses as much as digits as its factorization.

124115731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 124115731 is about 11140.7239890413. The cubic root of 124115731 is about 498.8181834870.

The spelling of 124115731 in words is "one hundred twenty-four million, one hundred fifteen thousand, seven hundred thirty-one".