123642359 has 2 divisors, whose sum is σ = 123642360. Its totient is φ = 123642358.

The previous prime is 123642331. The next prime is 123642371. The reversal of 123642359 is 953246321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123642359 - 2¹⁶ = 123576823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123642559) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61821179 + 61821180.

It is an arithmetic number, because the mean of its divisors is an integer number (61821180).

Almost surely, 2^123642359 is an apocalyptic number.

123642359 is a deficient number, since it is larger than the sum of its proper divisors (1).

123642359 is an equidigital number, since it uses as much as digits as its factorization.

123642359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 123642359 is about 11119.4585749487. The cubic root of 123642359 is about 498.1832186063.

The spelling of 123642359 in words is "one hundred twenty-three million, six hundred forty-two thousand, three hundred fifty-nine".