23942047 has 2 divisors, whose sum is σ = 23942048. Its totient is φ = 23942046.

The previous prime is 23942003. The next prime is 23942053. The reversal of 23942047 is 74024932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23942047 - 2¹⁵ = 23909279 is a prime.

It is a super-2 number, since 2×23942047² = 1146443229100418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23942077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11971023 + 11971024.

It is an arithmetic number, because the mean of its divisors is an integer number (11971024).

Almost surely, 2^23942047 is an apocalyptic number.

23942047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23942047 is an equidigital number, since it uses as much as digits as its factorization.

23942047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 23942047 is about 4893.0611073233. The cubic root of 23942047 is about 288.2175527957.

Adding to 23942047 its reverse (74024932), we get a palindrome (97966979).

The spelling of 23942047 in words is "twenty-three million, nine hundred forty-two thousand, forty-seven".