402345206143 has 4 divisors (see below), whose sum is σ = 402449363568. Its totient is φ = 402241048720.

The previous prime is 402345206057. The next prime is 402345206149. The reversal of 402345206143 is 341602543204.

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 402345206143 - 2²⁵ = 402311651711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402345206099 and 402345206108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402345206149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52072918 + ... + 52080643.

It is an arithmetic number, because the mean of its divisors is an integer number (100612340892).

Almost surely, 2^402345206143 is an apocalyptic number.

402345206143 is a deficient number, since it is larger than the sum of its proper divisors (104157425).

402345206143 is a wasteful number, since it uses less digits than its factorization.

402345206143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104157424.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 402345206143 its reverse (341602543204), we get a palindrome (743947749347).

The spelling of 402345206143 in words is "four hundred two billion, three hundred forty-five million, two hundred six thousand, one hundred forty-three".