402101115 has 16 divisors (see below), whose sum is σ = 692851488. Its totient is φ = 197957376.

The previous prime is 402101113. The next prime is 402101137. The reversal of 402101115 is 511101204.

It is a happy number.

It is not a de Polignac number, because 402101115 - 2¹ = 402101113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 402101094 and 402101103.

It is not an unprimeable number, because it can be changed into a prime (402101113) 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, 1030834 + ... + 1031223.

It is an arithmetic number, because the mean of its divisors is an integer number (43303218).

Almost surely, 2^402101115 is an apocalyptic number.

402101115 is a deficient number, since it is larger than the sum of its proper divisors (290750373).

402101115 is a wasteful number, since it uses less digits than its factorization.

402101115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062078.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 402101115 is about 20052.4590761333. The cubic root of 402101115 is about 738.0941430712.

Adding to 402101115 its reverse (511101204), we get a palindrome (913202319).

The spelling of 402101115 in words is "four hundred two million, one hundred one thousand, one hundred fifteen".