42804959 has 2 divisors, whose sum is σ = 42804960. Its totient is φ = 42804958.

The previous prime is 42804953. The next prime is 42804961. The reversal of 42804959 is 95940824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42804959 is a prime.

Together with 42804961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42804953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21402479 + 21402480.

It is an arithmetic number, because the mean of its divisors is an integer number (21402480).

Almost surely, 2^42804959 is an apocalyptic number.

42804959 is a deficient number, since it is larger than the sum of its proper divisors (1).

42804959 is an equidigital number, since it uses as much as digits as its factorization.

42804959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 42804959 is about 6542.5498851747. The cubic root of 42804959 is about 349.8093083686.

The spelling of 42804959 in words is "forty-two million, eight hundred four thousand, nine hundred fifty-nine".