342686940 has 96 divisors (see below), whose sum is σ = 977368896. Its totient is φ = 89702400.

The previous prime is 342686921. The next prime is 342686947. The reversal of 342686940 is 49686243.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 342686892 and 342686901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342686947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1169434 + ... + 1169726.

It is an arithmetic number, because the mean of its divisors is an integer number (10180926).

Almost surely, 2^342686940 is an apocalyptic number.

342686940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342686940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488684448).

342686940 is an abundant number, since it is smaller than the sum of its proper divisors (634681956).

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

342686940 is a wasteful number, since it uses less digits than its factorization.

342686940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 342686940 is about 18511.8054224865. The cubic root of 342686940 is about 699.7869691886.

The spelling of 342686940 in words is "three hundred forty-two million, six hundred eighty-six thousand, nine hundred forty".