124521641 has 2 divisors, whose sum is σ = 124521642. Its totient is φ = 124521640.

The previous prime is 124521569. The next prime is 124521647. The reversal of 124521641 is 146125421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124434025 + 87616 = 11155^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 124521641 - 2¹⁸ = 124259497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124521641.

It is not a weakly prime, because it can be changed into another prime (124521647) 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, 62260820 + 62260821.

It is an arithmetic number, because the mean of its divisors is an integer number (62260821).

Almost surely, 2^124521641 is an apocalyptic number.

It is an amenable number.

124521641 is a deficient number, since it is larger than the sum of its proper divisors (1).

124521641 is an equidigital number, since it uses as much as digits as its factorization.

124521641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 26.

The square root of 124521641 is about 11158.9265164710. The cubic root of 124521641 is about 499.3613726575.

The spelling of 124521641 in words is "one hundred twenty-four million, five hundred twenty-one thousand, six hundred forty-one".