402004342 has 8 divisors (see below), whose sum is σ = 622458432. Its totient is φ = 194518200.

The previous prime is 402004331. The next prime is 402004349. The reversal of 402004342 is 243400204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402004349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3241909 + ... + 3242032.

It is an arithmetic number, because the mean of its divisors is an integer number (77807304).

Almost surely, 2^402004342 is an apocalyptic number.

402004342 is a deficient number, since it is larger than the sum of its proper divisors (220454090).

402004342 is a wasteful number, since it uses less digits than its factorization.

402004342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483974.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402004342 is about 20050.0459351095. The cubic root of 402004342 is about 738.0349263612.

Adding to 402004342 its reverse (243400204), we get a palindrome (645404546).

The spelling of 402004342 in words is "four hundred two million, four thousand, three hundred forty-two".