172842199 has 2 divisors, whose sum is σ = 172842200. Its totient is φ = 172842198.

The previous prime is 172842193. The next prime is 172842227. The reversal of 172842199 is 991248271.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172842199 - 2¹⁷ = 172711127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172842193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86421099 + 86421100.

It is an arithmetic number, because the mean of its divisors is an integer number (86421100).

Almost surely, 2^172842199 is an apocalyptic number.

172842199 is a deficient number, since it is larger than the sum of its proper divisors (1).

172842199 is an equidigital number, since it uses as much as digits as its factorization.

172842199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 172842199 is about 13146.9463754896. The cubic root of 172842199 is about 557.0359967153.

The spelling of 172842199 in words is "one hundred seventy-two million, eight hundred forty-two thousand, one hundred ninety-nine".