23142245 has 16 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 15480960.

The previous prime is 23142239. The next prime is 23142277. The reversal of 23142245 is 54224132.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23142245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23142245.

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 15 ways as a sum of consecutive naturals, for example, 6629 + ... + 9498.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^23142245 is an apocalyptic number.

It is an amenable number.

23142245 is a deficient number, since it is larger than the sum of its proper divisors (9371803).

23142245 is a wasteful number, since it uses less digits than its factorization.

23142245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16180.

The product of its digits is 1920, while the sum is 23.

The square root of 23142245 is about 4810.6387309795. The cubic root of 23142245 is about 284.9717628739.

Adding to 23142245 its reverse (54224132), we get a palindrome (77366377).

The spelling of 23142245 in words is "twenty-three million, one hundred forty-two thousand, two hundred forty-five".