402425340 has 48 divisors (see below), whose sum is σ = 1129312800. Its totient is φ = 107073280.

The previous prime is 402425333. The next prime is 402425351. The reversal of 402425340 is 43524204.

It is a self number, because there is not a number n which added to its sum of digits gives 402425340.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20386 + ... + 34934.

It is an arithmetic number, because the mean of its divisors is an integer number (23527350).

Almost surely, 2^402425340 is an apocalyptic number.

It is an amenable number.

402425340 is an abundant number, since it is smaller than the sum of its proper divisors (726887460).

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

402425340 is a wasteful number, since it uses less digits than its factorization.

402425340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15022 (or 15020 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402425340 is about 20060.5418670583. The cubic root of 402425340 is about 738.2924715290.

Adding to 402425340 its reverse (43524204), we get a palindrome (445949544).

The spelling of 402425340 in words is "four hundred two million, four hundred twenty-five thousand, three hundred forty".