402143330 has 32 divisors (see below), whose sum is σ = 780916464. Its totient is φ = 148535296.

The previous prime is 402143323. The next prime is 402143359. The reversal of 402143330 is 33341204.

402143330 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 347486881 + 54656449 = 18641^2 + 7393^2 .

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, 13307 + ... + 31326.

Almost surely, 2^402143330 is an apocalyptic number.

402143330 is a deficient number, since it is larger than the sum of its proper divisors (378773134).

402143330 is a wasteful number, since it uses less digits than its factorization.

402143330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44710.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 402143330 is about 20053.5116625493. The cubic root of 402143330 is about 738.1199720255.

Adding to 402143330 its reverse (33341204), we get a palindrome (435484534).

The spelling of 402143330 in words is "four hundred two million, one hundred forty-three thousand, three hundred thirty".