124131454561 has 2 divisors, whose sum is σ = 124131454562. Its totient is φ = 124131454560.

The previous prime is 124131454537. The next prime is 124131454567. The reversal of 124131454561 is 165454131421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115155029025 + 8976425536 = 339345^2 + 94744^2 .

It is a cyclic number.

It is not a de Polignac number, because 124131454561 - 2⁵ = 124131454529 is a prime.

It is a super-2 number, since 2×124131454561² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124131454561.

It is not a weakly prime, because it can be changed into another prime (124131454567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62065727280 + 62065727281.

It is an arithmetic number, because the mean of its divisors is an integer number (62065727281).

Almost surely, 2^124131454561 is an apocalyptic number.

It is an amenable number.

124131454561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124131454561 is an equidigital number, since it uses as much as digits as its factorization.

124131454561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 37.

Adding to 124131454561 its reverse (165454131421), we get a palindrome (289585585982).

The spelling of 124131454561 in words is "one hundred twenty-four billion, one hundred thirty-one million, four hundred fifty-four thousand, five hundred sixty-one".