342691398 has 120 divisors (see below), whose sum is σ = 932584752. Its totient is φ = 93604896.

The previous prime is 342691357. The next prime is 342691409. The reversal of 342691398 is 893196243.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 181636 + ... + 183512.

Almost surely, 2^342691398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342691398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466292376).

342691398 is an abundant number, since it is smaller than the sum of its proper divisors (589893354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342691398 is a wasteful number, since it uses less digits than its factorization.

342691398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1912 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 342691398 is about 18511.9258317442. The cubic root of 342691398 is about 699.7900036752.

The spelling of 342691398 in words is "three hundred forty-two million, six hundred ninety-one thousand, three hundred ninety-eight".