124057421 has 2 divisors, whose sum is σ = 124057422. Its totient is φ = 124057420.

The previous prime is 124057357. The next prime is 124057433. The reversal of 124057421 is 124750421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 11485321 = 10610^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 124057421 - 2⁶ = 124057357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124057481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62028710 + 62028711.

It is an arithmetic number, because the mean of its divisors is an integer number (62028711).

Almost surely, 2^124057421 is an apocalyptic number.

It is an amenable number.

124057421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124057421 is an equidigital number, since it uses as much as digits as its factorization.

124057421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 124057421 is about 11138.1067062585. The cubic root of 124057421 is about 498.7400557478.

The spelling of 124057421 in words is "one hundred twenty-four million, fifty-seven thousand, four hundred twenty-one".