123102240403957 has 2 divisors, whose sum is σ = 123102240403958. Its totient is φ = 123102240403956.

The previous prime is 123102240403931. The next prime is 123102240403973. The reversal of 123102240403957 is 759304042201321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119792893660036 + 3309346743921 = 10944994^2 + 1819161^2 .

It is a cyclic number.

It is not a de Polignac number, because 123102240403957 - 2⁷ = 123102240403829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123102240403157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551120201978 + 61551120201979.

It is an arithmetic number, because the mean of its divisors is an integer number (61551120201979).

Almost surely, 2^{123102240403957} is an apocalyptic number.

It is an amenable number.

123102240403957 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102240403957 is an equidigital number, since it uses as much as digits as its factorization.

123102240403957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 123102240403957 in words is "one hundred twenty-three trillion, one hundred two billion, two hundred forty million, four hundred three thousand, nine hundred fifty-seven".