402242250 has 32 divisors (see below), whose sum is σ = 1003998528. Its totient is φ = 107264400.

The previous prime is 402242233. The next prime is 402242257. The reversal of 402242250 is 52242204.

It is not an unprimeable number, because it can be changed into a prime (402242257) by changing a digit.

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, 267412 + ... + 268911.

It is an arithmetic number, because the mean of its divisors is an integer number (31374954).

Almost surely, 2^402242250 is an apocalyptic number.

402242250 is an abundant number, since it is smaller than the sum of its proper divisors (601756278).

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

402242250 is a wasteful number, since it uses less digits than its factorization.

402242250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536343 (or 536333 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 402242250 is about 20055.9779118347. The cubic root of 402242250 is about 738.1804884602.

Adding to 402242250 its reverse (52242204), we get a palindrome (454484454).

The spelling of 402242250 in words is "four hundred two million, two hundred forty-two thousand, two hundred fifty".