402342999 has 8 divisors (see below), whose sum is σ = 536580720. Its totient is φ = 268166976.

The previous prime is 402342977. The next prime is 402343001. The reversal of 402342999 is 999243204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402342999 - 2¹⁵ = 402310231 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 402342999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402342929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907 + ... + 28515.

It is an arithmetic number, because the mean of its divisors is an integer number (67072590).

Almost surely, 2^402342999 is an apocalyptic number.

402342999 is a deficient number, since it is larger than the sum of its proper divisors (134237721).

402342999 is a wasteful number, since it uses less digits than its factorization.

402342999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30849.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 402342999 is about 20058.4894496071. The cubic root of 402342999 is about 738.2421136273.

The spelling of 402342999 in words is "four hundred two million, three hundred forty-two thousand, nine hundred ninety-nine".