23042591 has 8 divisors (see below), whose sum is σ = 27071184. Its totient is φ = 19336320.

The previous prime is 23042581. The next prime is 23042597. The reversal of 23042591 is 19524032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23042591 - 2¹⁰ = 23041567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23042591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23042597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80426 + ... + 80711.

It is an arithmetic number, because the mean of its divisors is an integer number (3383898).

Almost surely, 2^23042591 is an apocalyptic number.

23042591 is a deficient number, since it is larger than the sum of its proper divisors (4028593).

23042591 is a wasteful number, since it uses less digits than its factorization.

23042591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161161.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 23042591 is about 4800.2698882459. The cubic root of 23042591 is about 284.5621305225.

The spelling of 23042591 in words is "twenty-three million, forty-two thousand, five hundred ninety-one".