342780940 has 24 divisors (see below), whose sum is σ = 722993040. Its totient is φ = 136511808.

The previous prime is 342780871. The next prime is 342780943. The reversal of 342780940 is 49087243.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 342780940.

It is not an unprimeable number, because it can be changed into a prime (342780943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32842 + ... + 42001.

It is an arithmetic number, because the mean of its divisors is an integer number (30124710).

Almost surely, 2^342780940 is an apocalyptic number.

It is an amenable number.

342780940 is an abundant number, since it is smaller than the sum of its proper divisors (380212100).

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

342780940 is a wasteful number, since it uses less digits than its factorization.

342780940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75081 (or 75079 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 342780940 is about 18514.3441687790. The cubic root of 342780940 is about 699.8509478562.

The spelling of 342780940 in words is "three hundred forty-two million, seven hundred eighty thousand, nine hundred forty".