402545143 has 64 divisors (see below), whose sum is σ = 572544000. Its totient is φ = 278570880.

The previous prime is 402545111. The next prime is 402545147. The reversal of 402545143 is 341545204.

It is not a de Polignac number, because 402545143 - 2⁵ = 402545111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402545147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1422280 + ... + 1422562.

It is an arithmetic number, because the mean of its divisors is an integer number (8946000).

Almost surely, 2^402545143 is an apocalyptic number.

402545143 is a deficient number, since it is larger than the sum of its proper divisors (169998857).

402545143 is a wasteful number, since it uses less digits than its factorization.

402545143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 402545143 is about 20063.5276808442. The cubic root of 402545143 is about 738.3657280799.

It can be divided in two parts, 402 and 545143, that added together give a palindrome (545545).

The spelling of 402545143 in words is "four hundred two million, five hundred forty-five thousand, one hundred forty-three".