342491668 has 6 divisors (see below), whose sum is σ = 599360426. Its totient is φ = 171245832.

The previous prime is 342491629. The next prime is 342491683. The reversal of 342491668 is 866194243.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 224160784 + 118330884 = 14972^2 + 10878^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42811455 + ... + 42811462.

Almost surely, 2^342491668 is an apocalyptic number.

It is an amenable number.

342491668 is a deficient number, since it is larger than the sum of its proper divisors (256868758).

342491668 is a wasteful number, since it uses less digits than its factorization.

342491668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85622921 (or 85622919 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 342491668 is about 18506.5304149643. The cubic root of 342491668 is about 699.6540249483.

The spelling of 342491668 in words is "three hundred forty-two million, four hundred ninety-one thousand, six hundred sixty-eight".