402125250 has 128 divisors (see below), whose sum is σ = 1057934592. Its totient is φ = 101606400.

The previous prime is 402125239. The next prime is 402125333. The reversal of 402125250 is 52521204.

It is a happy 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 63 ways as a sum of consecutive naturals, for example, 1193082 + ... + 1193418.

It is an arithmetic number, because the mean of its divisors is an integer number (8265114).

Almost surely, 2^402125250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402125250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528967296).

402125250 is an abundant number, since it is smaller than the sum of its proper divisors (655809342).

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

402125250 is a wasteful number, since it uses less digits than its factorization.

402125250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 402125250 is about 20053.0608636188. The cubic root of 402125250 is about 738.1089101245.

Adding to 402125250 its reverse (52521204), we get a palindrome (454646454).

The spelling of 402125250 in words is "four hundred two million, one hundred twenty-five thousand, two hundred fifty".