23142689 has 2 divisors, whose sum is σ = 23142690. Its totient is φ = 23142688.

The previous prime is 23142683. The next prime is 23142697. The reversal of 23142689 is 98624132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19009600 + 4133089 = 4360^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 23142689 - 2⁴ = 23142673 is a prime.

It is not a weakly prime, because it can be changed into another prime (23142683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571344 + 11571345.

It is an arithmetic number, because the mean of its divisors is an integer number (11571345).

Almost surely, 2^23142689 is an apocalyptic number.

It is an amenable number.

23142689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23142689 is an equidigital number, since it uses as much as digits as its factorization.

23142689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 23142689 is about 4810.6848784762. The cubic root of 23142689 is about 284.9735853225.

The spelling of 23142689 in words is "twenty-three million, one hundred forty-two thousand, six hundred eighty-nine".