23142499 has 2 divisors, whose sum is σ = 23142500. Its totient is φ = 23142498.

The previous prime is 23142487. The next prime is 23142517. The reversal of 23142499 is 99424132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23142499 - 2⁵ = 23142467 is a prime.

It is not a weakly prime, because it can be changed into another prime (23142419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571249 + 11571250.

It is an arithmetic number, because the mean of its divisors is an integer number (11571250).

Almost surely, 2^23142499 is an apocalyptic number.

23142499 is a deficient number, since it is larger than the sum of its proper divisors (1).

23142499 is an equidigital number, since it uses as much as digits as its factorization.

23142499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 23142499 is about 4810.6651307278. The cubic root of 23142499 is about 284.9728054487.

The spelling of 23142499 in words is "twenty-three million, one hundred forty-two thousand, four hundred ninety-nine".