123120923 has 2 divisors, whose sum is σ = 123120924. Its totient is φ = 123120922.

The previous prime is 123120913. The next prime is 123120971. The reversal of 123120923 is 329021321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123120923 - 2⁶ = 123120859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (123120913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560461 + 61560462.

It is an arithmetic number, because the mean of its divisors is an integer number (61560462).

Almost surely, 2^123120923 is an apocalyptic number.

123120923 is a deficient number, since it is larger than the sum of its proper divisors (1).

123120923 is an equidigital number, since it uses as much as digits as its factorization.

123120923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 123120923 is about 11095.9867970361. The cubic root of 123120923 is about 497.4819036708.

The spelling of 123120923 in words is "one hundred twenty-three million, one hundred twenty thousand, nine hundred twenty-three".