124247731 has 2 divisors, whose sum is σ = 124247732. Its totient is φ = 124247730.

The previous prime is 124247639. The next prime is 124247737. The reversal of 124247731 is 137742421.

It is a strong prime.

It is an emirp because it is prime and its reverse (137742421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124247731 - 2¹³ = 124239539 is a prime.

It is a super-2 number, since 2×124247731² = 30874997317296722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 124247693 and 124247702.

It is not a weakly prime, because it can be changed into another prime (124247737) 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 as a sum of consecutive naturals, namely, 62123865 + 62123866.

It is an arithmetic number, because the mean of its divisors is an integer number (62123866).

Almost surely, 2^124247731 is an apocalyptic number.

124247731 is a deficient number, since it is larger than the sum of its proper divisors (1).

124247731 is an equidigital number, since it uses as much as digits as its factorization.

124247731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 124247731 is about 11146.6466257794. The cubic root of 124247731 is about 498.9949557926.

The spelling of 124247731 in words is "one hundred twenty-four million, two hundred forty-seven thousand, seven hundred thirty-one".