402425000 has 48 divisors (see below), whose sum is σ = 943181820. Its totient is φ = 160960000.

The previous prime is 402424993. The next prime is 402425021. The reversal of 402425000 is 524204.

It can be written as a sum of positive squares in 6 ways, for example, as 38912644 + 363512356 = 6238^2 + 19066^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402425000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16952 + ... + 33048.

Almost surely, 2^402425000 is an apocalyptic number.

402425000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402425000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471590910).

402425000 is an abundant number, since it is smaller than the sum of its proper divisors (540756820).

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

402425000 is an equidigital number, since it uses as much as digits as its factorization.

402425000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16128 (or 16104 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 402425000 is about 20060.5333927092. The cubic root of 402425000 is about 738.2922636068.

Adding to 402425000 its reverse (524204), we get a palindrome (402949204).

The spelling of 402425000 in words is "four hundred two million, four hundred twenty-five thousand".