402100115 has 16 divisors (see below), whose sum is σ = 488153952. Its totient is φ = 317938944.

The previous prime is 402100093. The next prime is 402100117. The reversal of 402100115 is 511001204.

It is not a de Polignac number, because 402100115 - 2¹⁸ = 401837971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402100115.

It is not an unprimeable number, because it can be changed into a prime (402100117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458057 + ... + 458933.

It is an arithmetic number, because the mean of its divisors is an integer number (30509622).

Almost surely, 2^402100115 is an apocalyptic number.

402100115 is a deficient number, since it is larger than the sum of its proper divisors (86053837).

402100115 is a wasteful number, since it uses less digits than its factorization.

402100115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 402100115 is about 20052.4341415201. The cubic root of 402100115 is about 738.0935312063.

Adding to 402100115 its reverse (511001204), we get a palindrome (913101319).

The spelling of 402100115 in words is "four hundred two million, one hundred thousand, one hundred fifteen".