402135413 has 4 divisors (see below), whose sum is σ = 402907788. Its totient is φ = 401363040.

The previous prime is 402135389. The next prime is 402135443. The reversal of 402135413 is 314531204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 248945284 + 153190129 = 15778^2 + 12377^2 .

It is a cyclic number.

It is not a de Polignac number, because 402135413 - 2⁸ = 402135157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402135443) 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, 385406 + ... + 386447.

It is an arithmetic number, because the mean of its divisors is an integer number (100726947).

Almost surely, 2^402135413 is an apocalyptic number.

It is an amenable number.

402135413 is a deficient number, since it is larger than the sum of its proper divisors (772375).

402135413 is an equidigital number, since it uses as much as digits as its factorization.

402135413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772374.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 402135413 is about 20053.3142647294. The cubic root of 402135413 is about 738.1151282018.

Adding to 402135413 its reverse (314531204), we get a palindrome (716666617).

The spelling of 402135413 in words is "four hundred two million, one hundred thirty-five thousand, four hundred thirteen".