124999998979 has 2 divisors, whose sum is σ = 124999998980. Its totient is φ = 124999998978.

The previous prime is 124999998967. The next prime is 124999999037. The reversal of 124999998979 is 979899999421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124999998979 - 2⁹ = 124999998467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124999998896 and 124999998905.

It is not a weakly prime, because it can be changed into another prime (124999995979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62499999489 + 62499999490.

It is an arithmetic number, because the mean of its divisors is an integer number (62499999490).

Almost surely, 2^124999998979 is an apocalyptic number.

124999998979 is a deficient number, since it is larger than the sum of its proper divisors (1).

124999998979 is an equidigital number, since it uses as much as digits as its factorization.

124999998979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2142770112, while the sum is 85.

The spelling of 124999998979 in words is "one hundred twenty-four billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred seventy-nine".