124400641 has 2 divisors, whose sum is σ = 124400642. Its totient is φ = 124400640.

The previous prime is 124400621. The next prime is 124400651. The reversal of 124400641 is 146004421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68823616 + 55577025 = 8296^2 + 7455^2 .

It is an emirp because it is prime and its reverse (146004421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124400641 - 2²⁵ = 90846209 is a prime.

It is not a weakly prime, because it can be changed into another prime (124400621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62200320 + 62200321.

It is an arithmetic number, because the mean of its divisors is an integer number (62200321).

Almost surely, 2^124400641 is an apocalyptic number.

It is an amenable number.

124400641 is a deficient number, since it is larger than the sum of its proper divisors (1).

124400641 is an equidigital number, since it uses as much as digits as its factorization.

124400641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 124400641 is about 11153.5035302814. The cubic root of 124400641 is about 499.1995739868.

The spelling of 124400641 in words is "one hundred twenty-four million, four hundred thousand, six hundred forty-one".