402143 has 12 divisors (see below), whose sum is σ = 485640. Its totient is φ = 331632.

The previous prime is 402139. The next prime is 402197. The reversal of 402143 is 341204.

It is not a de Polignac number, because 402143 - 2² = 402139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1280 + ... + 1562.

It is an arithmetic number, because the mean of its divisors is an integer number (40470).

2⁴⁰²¹⁴³ is an apocalyptic number.

402143 is a deficient number, since it is larger than the sum of its proper divisors (83497).

402143 is a wasteful number, since it uses less digits than its factorization.

402143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 402143 is about 634.1474591923. The cubic root of 402143 is about 73.8119770124.

Adding to 402143 its reverse (341204), we get a palindrome (743347).

It can be divided in two parts, 402 and 143, that added together give a palindrome (545).

The spelling of 402143 in words is "four hundred two thousand, one hundred forty-three", and thus it is an iban number.