402425424 has 60 divisors (see below), whose sum is σ = 1130024896. Its totient is φ = 133690176.

The previous prime is 402425423. The next prime is 402425459. The reversal of 402425424 is 424524204.

402425424 is a `hidden beast` number, since 402 + 4 + 254 + 2 + 4 = 666.

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 11 ways as a sum of consecutive naturals, for example, 39657 + ... + 48759.

Almost surely, 2^402425424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402425424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565012448).

402425424 is an abundant number, since it is smaller than the sum of its proper divisors (727599472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402425424 is a wasteful number, since it uses less digits than its factorization.

402425424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9424 (or 9415 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 402425424 is about 20060.5439607205. The cubic root of 402425424 is about 738.2925228980.

Adding to 402425424 its reverse (424524204), we get a palindrome (826949628).

The spelling of 402425424 in words is "four hundred two million, four hundred twenty-five thousand, four hundred twenty-four".