23142755 has 4 divisors (see below), whose sum is σ = 27771312. Its totient is φ = 18514200.

The previous prime is 23142751. The next prime is 23142767. The reversal of 23142755 is 55724132.

It is a happy number.

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

It is not a de Polignac number, because 23142755 - 2² = 23142751 is a prime.

It is a super-3 number, since 3×23142755³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23142751) 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, 2314271 + ... + 2314280.

It is an arithmetic number, because the mean of its divisors is an integer number (6942828).

Almost surely, 2^23142755 is an apocalyptic number.

23142755 is a deficient number, since it is larger than the sum of its proper divisors (4628557).

23142755 is an equidigital number, since it uses as much as digits as its factorization.

23142755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628556.

The product of its digits is 8400, while the sum is 29.

The square root of 23142755 is about 4810.6917382015. The cubic root of 23142755 is about 284.9738562250.

Adding to 23142755 its reverse (55724132), we get a palindrome (78866887).

The spelling of 23142755 in words is "twenty-three million, one hundred forty-two thousand, seven hundred fifty-five".