124145129 has 2 divisors, whose sum is σ = 124145130. Its totient is φ = 124145128.

The previous prime is 124145123. The next prime is 124145207. The reversal of 124145129 is 921541421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83759104 + 40386025 = 9152^2 + 6355^2 .

It is an emirp because it is prime and its reverse (921541421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124145129 - 2⁴ = 124145113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124145123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62072564 + 62072565.

It is an arithmetic number, because the mean of its divisors is an integer number (62072565).

Almost surely, 2^124145129 is an apocalyptic number.

It is an amenable number.

124145129 is a deficient number, since it is larger than the sum of its proper divisors (1).

124145129 is an equidigital number, since it uses as much as digits as its factorization.

124145129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 124145129 is about 11142.0433045290. The cubic root of 124145129 is about 498.8575636665.

The spelling of 124145129 in words is "one hundred twenty-four million, one hundred forty-five thousand, one hundred twenty-nine".