123142006979 has 2 divisors, whose sum is σ = 123142006980. Its totient is φ = 123142006978.

The previous prime is 123142006961. The next prime is 123142006993. The reversal of 123142006979 is 979600241321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123142006979 is a prime.

It is not a weakly prime, because it can be changed into another prime (123142006909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61571003489 + 61571003490.

It is an arithmetic number, because the mean of its divisors is an integer number (61571003490).

Almost surely, 2^123142006979 is an apocalyptic number.

123142006979 is a deficient number, since it is larger than the sum of its proper divisors (1).

123142006979 is an equidigital number, since it uses as much as digits as its factorization.

123142006979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 123142006979 in words is "one hundred twenty-three billion, one hundred forty-two million, six thousand, nine hundred seventy-nine".