124349021 has 2 divisors, whose sum is σ = 124349022. Its totient is φ = 124349020.

The previous prime is 124348997. The next prime is 124349039. The reversal of 124349021 is 120943421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95844100 + 28504921 = 9790^2 + 5339^2 .

It is a cyclic number.

It is not a de Polignac number, because 124349021 - 2¹⁸ = 124086877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124349051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62174510 + 62174511.

It is an arithmetic number, because the mean of its divisors is an integer number (62174511).

Almost surely, 2^124349021 is an apocalyptic number.

It is an amenable number.

124349021 is a deficient number, since it is larger than the sum of its proper divisors (1).

124349021 is an equidigital number, since it uses as much as digits as its factorization.

124349021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 124349021 is about 11151.1892190923. The cubic root of 124349021 is about 499.1305168746.

The spelling of 124349021 in words is "one hundred twenty-four million, three hundred forty-nine thousand, twenty-one".