402143242142 has 8 divisors (see below), whose sum is σ = 603308072016. Its totient is φ = 201040551472.

The previous prime is 402143242139. The next prime is 402143242153. The reversal of 402143242142 is 241242341204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 15518618 + ... + 15544509.

It is an arithmetic number, because the mean of its divisors is an integer number (75413509002).

Almost surely, 2^402143242142 is an apocalyptic number.

402143242142 is a deficient number, since it is larger than the sum of its proper divisors (201164829874).

402143242142 is a wasteful number, since it uses less digits than its factorization.

402143242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31069602.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 402143242142 its reverse (241242341204), we get a palindrome (643385583346).

The spelling of 402143242142 in words is "four hundred two billion, one hundred forty-three million, two hundred forty-two thousand, one hundred forty-two".