23142503 has 4 divisors (see below), whose sum is σ = 23579208. Its totient is φ = 22705800.

The previous prime is 23142499. The next prime is 23142517. The reversal of 23142503 is 30524132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23142503 - 2² = 23142499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218273 + ... + 218378.

It is an arithmetic number, because the mean of its divisors is an integer number (5894802).

Almost surely, 2^23142503 is an apocalyptic number.

23142503 is a deficient number, since it is larger than the sum of its proper divisors (436705).

23142503 is an equidigital number, since it uses as much as digits as its factorization.

23142503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436704.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23142503 is about 4810.6655464707. The cubic root of 23142503 is about 284.9728218671.

Adding to 23142503 its reverse (30524132), we get a palindrome (53666635).

The spelling of 23142503 in words is "twenty-three million, one hundred forty-two thousand, five hundred three".