23442403 has 4 divisors (see below), whose sum is σ = 23674608. Its totient is φ = 23210200.

The previous prime is 23442401. The next prime is 23442407. The reversal of 23442403 is 30424432.

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 23442403 - 2¹ = 23442401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23442401) 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, 115951 + ... + 116152.

It is an arithmetic number, because the mean of its divisors is an integer number (5918652).

Almost surely, 2^23442403 is an apocalyptic number.

23442403 is a deficient number, since it is larger than the sum of its proper divisors (232205).

23442403 is a wasteful number, since it uses less digits than its factorization.

23442403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232204.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 23442403 is about 4841.7355359416. The cubic root of 23442403 is about 286.1985149232.

Adding to 23442403 its reverse (30424432), we get a palindrome (53866835).

The spelling of 23442403 in words is "twenty-three million, four hundred forty-two thousand, four hundred three".