120638423 has 2 divisors, whose sum is σ = 120638424. Its totient is φ = 120638422.

The previous prime is 120638407. The next prime is 120638431. The reversal of 120638423 is 324836021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120638423 - 2⁴ = 120638407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120638723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60319211 + 60319212.

It is an arithmetic number, because the mean of its divisors is an integer number (60319212).

Almost surely, 2^120638423 is an apocalyptic number.

120638423 is a deficient number, since it is larger than the sum of its proper divisors (1).

120638423 is an equidigital number, since it uses as much as digits as its factorization.

120638423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 120638423 is about 10983.5523852714. The cubic root of 120638423 is about 494.1155829465.

The spelling of 120638423 in words is "one hundred twenty million, six hundred thirty-eight thousand, four hundred twenty-three".