42817199 has 2 divisors, whose sum is σ = 42817200. Its totient is φ = 42817198.

The previous prime is 42817193. The next prime is 42817213. The reversal of 42817199 is 99171824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42817199 - 2⁴ = 42817183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42817193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21408599 + 21408600.

It is an arithmetic number, because the mean of its divisors is an integer number (21408600).

Almost surely, 2^42817199 is an apocalyptic number.

42817199 is a deficient number, since it is larger than the sum of its proper divisors (1).

42817199 is an equidigital number, since it uses as much as digits as its factorization.

42817199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 42817199 is about 6543.4852334211. The cubic root of 42817199 is about 349.8426476358.

The spelling of 42817199 in words is "forty-two million, eight hundred seventeen thousand, one hundred ninety-nine".