402012113 has 4 divisors (see below), whose sum is σ = 402057780. Its totient is φ = 401966448.

The previous prime is 402012059. The next prime is 402012133. The reversal of 402012113 is 311210204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 193989184 + 208022929 = 13928^2 + 14423^2 .

It is a cyclic number.

It is not a de Polignac number, because 402012113 - 2¹⁴ = 401995729 is a prime.

It is a super-2 number, since 2×402012113² = 323227477997449538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402012133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4970 + ... + 28787.

It is an arithmetic number, because the mean of its divisors is an integer number (100514445).

Almost surely, 2^402012113 is an apocalyptic number.

It is an amenable number.

402012113 is a deficient number, since it is larger than the sum of its proper divisors (45667).

402012113 is a wasteful number, since it uses less digits than its factorization.

402012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45666.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 402012113 is about 20050.2397242527. The cubic root of 402012113 is about 738.0396818923.

Adding to 402012113 its reverse (311210204), we get a palindrome (713222317).

The spelling of 402012113 in words is "four hundred two million, twelve thousand, one hundred thirteen".