23420123 has 2 divisors, whose sum is σ = 23420124. Its totient is φ = 23420122.

The previous prime is 23420119. The next prime is 23420167. The reversal of 23420123 is 32102432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23420123 - 2² = 23420119 is a prime.

It is a super-2 number, since 2×23420123² = 1097004322670258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23420113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710061 + 11710062.

It is an arithmetic number, because the mean of its divisors is an integer number (11710062).

Almost surely, 2^23420123 is an apocalyptic number.

23420123 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420123 is an equidigital number, since it uses as much as digits as its factorization.

23420123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23420123 is about 4839.4341611391. The cubic root of 23420123 is about 286.1078171096.

Adding to 23420123 its reverse (32102432), we get a palindrome (55522555).

The spelling of 23420123 in words is "twenty-three million, four hundred twenty thousand, one hundred twenty-three".