124351021 has 2 divisors, whose sum is σ = 124351022. Its totient is φ = 124351020.

The previous prime is 124350979. The next prime is 124351063. The reversal of 124351021 is 120153421.

It is a balanced prime because it is at equal distance from previous prime (124350979) and next prime (124351063).

It can be written as a sum of positive squares in only one way, i.e., 122877225 + 1473796 = 11085^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 124351021 - 2⁹ = 124350509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124351021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124351321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62175510 + 62175511.

It is an arithmetic number, because the mean of its divisors is an integer number (62175511).

Almost surely, 2^124351021 is an apocalyptic number.

It is an amenable number.

124351021 is a deficient number, since it is larger than the sum of its proper divisors (1).

124351021 is an equidigital number, since it uses as much as digits as its factorization.

124351021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 124351021 is about 11151.2788952658. The cubic root of 124351021 is about 499.1331928257.

It can be divided in two parts, 12435 and 1021, that added together give a square (13456 = 116²).

The spelling of 124351021 in words is "one hundred twenty-four million, three hundred fifty-one thousand, twenty-one".