342400042 has 8 divisors (see below), whose sum is σ = 531310500. Its totient is φ = 165296544.

The previous prime is 342399989. The next prime is 342400049. The reversal of 342400042 is 240004243.

It can be written as a sum of positive squares in 2 ways, for example, as 324684361 + 17715681 = 18019^2 + 4209^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 342399992 and 342400019.

It is not an unprimeable number, because it can be changed into a prime (342400049) 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, 2951667 + ... + 2951782.

Almost surely, 2^342400042 is an apocalyptic number.

342400042 is a deficient number, since it is larger than the sum of its proper divisors (188910458).

342400042 is a wasteful number, since it uses less digits than its factorization.

342400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903480.

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

The square root of 342400042 is about 18504.0547448390. The cubic root of 342400042 is about 699.5916271119.

Adding to 342400042 its reverse (240004243), we get a palindrome (582404285).

The spelling of 342400042 in words is "three hundred forty-two million, four hundred thousand, forty-two".