402143052 has 24 divisors (see below), whose sum is σ = 960156736. Its totient is φ = 130930128.

The previous prime is 402143039. The next prime is 402143107. The reversal of 402143052 is 250341204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389158 + ... + 390189.

Almost surely, 2^402143052 is an apocalyptic number.

It is an amenable number.

402143052 is an abundant number, since it is smaller than the sum of its proper divisors (558013684).

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

402143052 is a wasteful number, since it uses less digits than its factorization.

402143052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779397 (or 779395 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402143052 is about 20053.5047310938. The cubic root of 402143052 is about 738.1198019390.

Adding to 402143052 its reverse (250341204), we get a palindrome (652484256).

The spelling of 402143052 in words is "four hundred two million, one hundred forty-three thousand, fifty-two".