342215999 has 4 divisors (see below), whose sum is σ = 344714064. Its totient is φ = 339717936.

The previous prime is 342215987. The next prime is 342216029. The reversal of 342215999 is 999512243.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342215999 - 2⁸ = 342215743 is a prime.

It is a super-2 number, since 2×342215999² = 234223579943136002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342215969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1248827 + ... + 1249100.

It is an arithmetic number, because the mean of its divisors is an integer number (86178516).

Almost surely, 2^342215999 is an apocalyptic number.

342215999 is a deficient number, since it is larger than the sum of its proper divisors (2498065).

342215999 is a wasteful number, since it uses less digits than its factorization.

342215999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498064.

The product of its digits is 174960, while the sum is 44.

The square root of 342215999 is about 18499.0810312296. The cubic root of 342215999 is about 699.4662591194.

The spelling of 342215999 in words is "three hundred forty-two million, two hundred fifteen thousand, nine hundred ninety-nine".