402142304 has 96 divisors (see below), whose sum is σ = 868734720. Its totient is φ = 182651392.

The previous prime is 402142283. The next prime is 402142313. The reversal of 402142304 is 403241204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771439 + ... + 1771665.

It is an arithmetic number, because the mean of its divisors is an integer number (9049320).

Almost surely, 2^402142304 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 402142304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434367360).

402142304 is an abundant number, since it is smaller than the sum of its proper divisors (466592416).

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

402142304 is a wasteful number, since it uses less digits than its factorization.

402142304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402142304 is about 20053.4860809785. The cubic root of 402142304 is about 738.1193442959.

Adding to 402142304 its reverse (403241204), we get a palindrome (805383508).

The spelling of 402142304 in words is "four hundred two million, one hundred forty-two thousand, three hundred four".