124390729 has 2 divisors, whose sum is σ = 124390730. Its totient is φ = 124390728.

The previous prime is 124390709. The next prime is 124390733. The reversal of 124390729 is 927093421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105267600 + 19123129 = 10260^2 + 4373^2 .

It is a cyclic number.

It is not a de Polignac number, because 124390729 - 2¹⁹ = 123866441 is a prime.

It is a super-2 number, since 2×124390729² = 30946106922302882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124390709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62195364 + 62195365.

It is an arithmetic number, because the mean of its divisors is an integer number (62195365).

Almost surely, 2^124390729 is an apocalyptic number.

It is an amenable number.

124390729 is a deficient number, since it is larger than the sum of its proper divisors (1).

124390729 is an equidigital number, since it uses as much as digits as its factorization.

124390729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 124390729 is about 11153.0591767461. The cubic root of 124390729 is about 499.1863152191.

The spelling of 124390729 in words is "one hundred twenty-four million, three hundred ninety thousand, seven hundred twenty-nine".