402255143 has 4 divisors (see below), whose sum is σ = 416126040. Its totient is φ = 388384248.

The previous prime is 402255131. The next prime is 402255179. The reversal of 402255143 is 341552204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402255143 - 2⁸ = 402254887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402255043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6935405 + ... + 6935462.

It is an arithmetic number, because the mean of its divisors is an integer number (104031510).

Almost surely, 2^402255143 is an apocalyptic number.

402255143 is a deficient number, since it is larger than the sum of its proper divisors (13870897).

402255143 is a wasteful number, since it uses less digits than its factorization.

402255143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870896.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 402255143 is about 20056.2993346230. The cubic root of 402255143 is about 738.1883752990.

The spelling of 402255143 in words is "four hundred two million, two hundred fifty-five thousand, one hundred forty-three".