402102413 has 4 divisors (see below), whose sum is σ = 404143740. Its totient is φ = 400061088.

The previous prime is 402102403. The next prime is 402102427. The reversal of 402102413 is 314201204.

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 233570089 + 168532324 = 15283^2 + 12982^2 .

It is a cyclic number.

It is not a de Polignac number, because 402102413 - 2⁸ = 402102157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402102391 and 402102400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402102403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020368 + ... + 1020761.

It is an arithmetic number, because the mean of its divisors is an integer number (101035935).

Almost surely, 2^402102413 is an apocalyptic number.

It is an amenable number.

402102413 is a deficient number, since it is larger than the sum of its proper divisors (2041327).

402102413 is a wasteful number, since it uses less digits than its factorization.

402102413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041326.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402102413 is about 20052.4914412150. The cubic root of 402102413 is about 738.0949372704.

Adding to 402102413 its reverse (314201204), we get a palindrome (716303617).

The spelling of 402102413 in words is "four hundred two million, one hundred two thousand, four hundred thirteen".