402143460 has 48 divisors (see below), whose sum is σ = 1128152256. Its totient is φ = 107033472.

The previous prime is 402143453. The next prime is 402143461. The reversal of 402143460 is 64341204.

It is a self number, because there is not a number n which added to its sum of digits gives 402143460.

It is not an unprimeable number, because it can be changed into a prime (402143461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26694 + ... + 38946.

It is an arithmetic number, because the mean of its divisors is an integer number (23503172).

Almost surely, 2^402143460 is an apocalyptic number.

It is an amenable number.

402143460 is an abundant number, since it is smaller than the sum of its proper divisors (726008796).

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

402143460 is a wasteful number, since it uses less digits than its factorization.

402143460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12812 (or 12810 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 402143460 is about 20053.5149038766. The cubic root of 402143460 is about 738.1200515623.

Adding to 402143460 its reverse (64341204), we get a palindrome (466484664).

The spelling of 402143460 in words is "four hundred two million, one hundred forty-three thousand, four hundred sixty".