342409404346 has 4 divisors (see below), whose sum is σ = 513614106522. Its totient is φ = 171204702172.

The previous prime is 342409404317. The next prime is 342409404349. The reversal of 342409404346 is 643404904243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643404904243 = 89 ⋅7229268587.

It can be written as a sum of positive squares in only one way, i.e., 318225733225 + 24183671121 = 564115^2 + 155511^2 .

It is not an unprimeable number, because it can be changed into a prime (342409404349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85602351085 + ... + 85602351088.

Almost surely, 2^342409404346 is an apocalyptic number.

342409404346 is a deficient number, since it is larger than the sum of its proper divisors (171204702176).

342409404346 is a wasteful number, since it uses less digits than its factorization.

342409404346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171204702175.

The product of its (nonzero) digits is 995328, while the sum is 43.

The spelling of 342409404346 in words is "three hundred forty-two billion, four hundred nine million, four hundred four thousand, three hundred forty-six".