23142445 has 4 divisors (see below), whose sum is σ = 27770940. Its totient is φ = 18513952.

The previous prime is 23142421. The next prime is 23142463. The reversal of 23142445 is 54424132.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 19245769 = 1974^2 + 4387^2 .

It is a cyclic number.

It is not a de Polignac number, because 23142445 - 2¹³ = 23134253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314240 + ... + 2314249.

It is an arithmetic number, because the mean of its divisors is an integer number (6942735).

Almost surely, 2^23142445 is an apocalyptic number.

It is an amenable number.

23142445 is a deficient number, since it is larger than the sum of its proper divisors (4628495).

23142445 is an equidigital number, since it uses as much as digits as its factorization.

23142445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628494.

The product of its digits is 3840, while the sum is 25.

The square root of 23142445 is about 4810.6595181950. The cubic root of 23142445 is about 284.9725837996.

Adding to 23142445 its reverse (54424132), we get a palindrome (77566577).

The spelling of 23142445 in words is "twenty-three million, one hundred forty-two thousand, four hundred forty-five".