402425413 has 4 divisors (see below), whose sum is σ = 433381228. Its totient is φ = 371469600.

The previous prime is 402425407. The next prime is 402425423. The reversal of 402425413 is 314524204.

It is a happy number.

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 22877089 + 379548324 = 4783^2 + 19482^2 .

It is a cyclic number.

It is not a de Polignac number, because 402425413 - 2²¹ = 400328261 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 (402425423) 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, 15477888 + ... + 15477913.

It is an arithmetic number, because the mean of its divisors is an integer number (108345307).

Almost surely, 2^402425413 is an apocalyptic number.

It is an amenable number.

402425413 is a deficient number, since it is larger than the sum of its proper divisors (30955815).

402425413 is a wasteful number, since it uses less digits than its factorization.

402425413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30955814.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 402425413 is about 20060.5436865505. The cubic root of 402425413 is about 738.2925161711.

Adding to 402425413 its reverse (314524204), we get a palindrome (716949617).

The spelling of 402425413 in words is "four hundred two million, four hundred twenty-five thousand, four hundred thirteen".