23142247 has 8 divisors (see below), whose sum is σ = 24407600. Its totient is φ = 21881664.

The previous prime is 23142239. The next prime is 23142277. The reversal of 23142247 is 74224132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23142247 - 2³ = 23142239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13579 + ... + 15187.

It is an arithmetic number, because the mean of its divisors is an integer number (3050950).

Almost surely, 2^23142247 is an apocalyptic number.

23142247 is a deficient number, since it is larger than the sum of its proper divisors (1265353).

23142247 is a wasteful number, since it uses less digits than its factorization.

23142247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385.

The product of its digits is 2688, while the sum is 25.

The square root of 23142247 is about 4810.6389388521. The cubic root of 23142247 is about 284.9717710832.

Adding to 23142247 its reverse (74224132), we get a palindrome (97366379).

The spelling of 23142247 in words is "twenty-three million, one hundred forty-two thousand, two hundred forty-seven".