23742055 has 4 divisors (see below), whose sum is σ = 28490472. Its totient is φ = 18993640.

The previous prime is 23742031. The next prime is 23742071. The reversal of 23742055 is 55024732.

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

It is a de Polignac number, because none of the positive numbers 2^k-23742055 is a prime.

It is a super-3 number, since 3×23742055³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2374201 + ... + 2374210.

It is an arithmetic number, because the mean of its divisors is an integer number (7122618).

Almost surely, 2^23742055 is an apocalyptic number.

23742055 is a deficient number, since it is larger than the sum of its proper divisors (4748417).

23742055 is an equidigital number, since it uses as much as digits as its factorization.

23742055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748416.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 23742055 is about 4872.5819644209. The cubic root of 23742055 is about 287.4127977498.

Adding to 23742055 its reverse (55024732), we get a palindrome (78766787).

The spelling of 23742055 in words is "twenty-three million, seven hundred forty-two thousand, fifty-five".