124104557 has 2 divisors, whose sum is σ = 124104558. Its totient is φ = 124104556.

The previous prime is 124104551. The next prime is 124104571. The reversal of 124104557 is 755401421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123232201 + 872356 = 11101^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 124104557 - 2¹⁸ = 123842413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124104551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62052278 + 62052279.

It is an arithmetic number, because the mean of its divisors is an integer number (62052279).

Almost surely, 2^124104557 is an apocalyptic number.

It is an amenable number.

124104557 is a deficient number, since it is larger than the sum of its proper divisors (1).

124104557 is an equidigital number, since it uses as much as digits as its factorization.

124104557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 124104557 is about 11140.2224843133. Note that the first 3 decimals coincide. The cubic root of 124104557 is about 498.8032136906.

Adding to 124104557 its reverse (755401421), we get a palindrome (879505978).

It can be divided in two parts, 1241045 and 57, that multiplied together give a triangular number (70739565 = T₁₁₈₉₄).

The spelling of 124104557 in words is "one hundred twenty-four million, one hundred four thousand, five hundred fifty-seven".