124256125993 has 2 divisors, whose sum is σ = 124256125994. Its totient is φ = 124256125992.

The previous prime is 124256125991. The next prime is 124256126023. The reversal of 124256125993 is 399521652421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100329295504 + 23926830489 = 316748^2 + 154683^2 .

It is a cyclic number.

It is not a de Polignac number, because 124256125993 - 2¹ = 124256125991 is a prime.

Together with 124256125991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (124256125991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62128062996 + 62128062997.

It is an arithmetic number, because the mean of its divisors is an integer number (62128062997).

Almost surely, 2^124256125993 is an apocalyptic number.

It is an amenable number.

124256125993 is a deficient number, since it is larger than the sum of its proper divisors (1).

124256125993 is an equidigital number, since it uses as much as digits as its factorization.

124256125993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 49.

The spelling of 124256125993 in words is "one hundred twenty-four billion, two hundred fifty-six million, one hundred twenty-five thousand, nine hundred ninety-three".