402143532 has 96 divisors (see below), whose sum is σ = 1112616960. Its totient is φ = 110626560.

The previous prime is 402143527. The next prime is 402143593. The reversal of 402143532 is 235341204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1012758 + ... + 1013154.

It is an arithmetic number, because the mean of its divisors is an integer number (11589760).

Almost surely, 2^402143532 is an apocalyptic number.

402143532 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402143532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556308480).

402143532 is an abundant number, since it is smaller than the sum of its proper divisors (710473428).

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

402143532 is a wasteful number, since it uses less digits than its factorization.

402143532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 402143532 is about 20053.5166990730. The cubic root of 402143532 is about 738.1200956134.

Adding to 402143532 its reverse (235341204), we get a palindrome (637484736).

The spelling of 402143532 in words is "four hundred two million, one hundred forty-three thousand, five hundred thirty-two".