23942843 has 2 divisors, whose sum is σ = 23942844. Its totient is φ = 23942842.

The previous prime is 23942837. The next prime is 23942879. The reversal of 23942843 is 34824932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23942843 - 2⁴ = 23942827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23942813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11971421 + 11971422.

It is an arithmetic number, because the mean of its divisors is an integer number (11971422).

Almost surely, 2^23942843 is an apocalyptic number.

23942843 is a deficient number, since it is larger than the sum of its proper divisors (1).

23942843 is an equidigital number, since it uses as much as digits as its factorization.

23942843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 23942843 is about 4893.1424463222. The cubic root of 23942843 is about 288.2207468783.

The spelling of 23942843 in words is "twenty-three million, nine hundred forty-two thousand, eight hundred forty-three".