124738561 has 2 divisors, whose sum is σ = 124738562. Its totient is φ = 124738560.

The previous prime is 124738501. The next prime is 124738577. The reversal of 124738561 is 165837421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96648561 + 28090000 = 9831^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 124738561 - 2¹⁷ = 124607489 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 124738561.

It is not a weakly prime, because it can be changed into another prime (124738501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62369280 + 62369281.

It is an arithmetic number, because the mean of its divisors is an integer number (62369281).

Almost surely, 2^124738561 is an apocalyptic number.

It is an amenable number.

124738561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124738561 is an equidigital number, since it uses as much as digits as its factorization.

124738561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 124738561 is about 11168.6418601368. The cubic root of 124738561 is about 499.6511713604.

The spelling of 124738561 in words is "one hundred twenty-four million, seven hundred thirty-eight thousand, five hundred sixty-one".