23142847 has 24 divisors (see below), whose sum is σ = 29647296. Its totient is φ = 17898048.

The previous prime is 23142839. The next prime is 23142859. The reversal of 23142847 is 74824132.

It is not a de Polignac number, because 23142847 - 2³ = 23142839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142887) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 29553 + ... + 30325.

It is an arithmetic number, because the mean of its divisors is an integer number (1235304).

Almost surely, 2^23142847 is an apocalyptic number.

23142847 is a deficient number, since it is larger than the sum of its proper divisors (6504449).

23142847 is a wasteful number, since it uses less digits than its factorization.

23142847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 840 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 23142847 is about 4810.7013002264. The cubic root of 23142847 is about 284.9742338458.

Adding to 23142847 its reverse (74824132), we get a palindrome (97966979).

The spelling of 23142847 in words is "twenty-three million, one hundred forty-two thousand, eight hundred forty-seven".