402213143 has 4 divisors (see below), whose sum is σ = 402253440. Its totient is φ = 402172848.

The previous prime is 402213139. The next prime is 402213187. The reversal of 402213143 is 341312204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 402213143 - 2² = 402213139 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 (402212143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7178 + ... + 29256.

It is an arithmetic number, because the mean of its divisors is an integer number (100563360).

Almost surely, 2^402213143 is an apocalyptic number.

402213143 is a deficient number, since it is larger than the sum of its proper divisors (40297).

402213143 is a wasteful number, since it uses less digits than its factorization.

402213143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40296.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 402213143 is about 20055.2522547087. The cubic root of 402213143 is about 738.1626826580.

Adding to 402213143 its reverse (341312204), we get a palindrome (743525347).

The spelling of 402213143 in words is "four hundred two million, two hundred thirteen thousand, one hundred forty-three".