402143342 has 8 divisors (see below), whose sum is σ = 603300096. Its totient is φ = 201043312.

The previous prime is 402143323. The next prime is 402143359. The reversal of 402143342 is 243341204.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21203 + ... + 35409.

It is an arithmetic number, because the mean of its divisors is an integer number (75412512).

Almost surely, 2^402143342 is an apocalyptic number.

402143342 is a deficient number, since it is larger than the sum of its proper divisors (201156754).

402143342 is a wasteful number, since it uses less digits than its factorization.

402143342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28362.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 402143342 is about 20053.5119617487. The cubic root of 402143342 is about 738.1199793673.

Adding to 402143342 its reverse (243341204), we get a palindrome (645484546).

The spelling of 402143342 in words is "four hundred two million, one hundred forty-three thousand, three hundred forty-two".