780342 has 8 divisors (see below), whose sum is σ = 1560696. Its totient is φ = 260112.

The previous prime is 780323. The next prime is 780343. The reversal of 780342 is 243087.

It is a sphenic number, since it is the product of 3 distinct primes.

780342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65023 + ... + 65034.

It is an arithmetic number, because the mean of its divisors is an integer number (195087).

2⁷⁸⁰³⁴² is an apocalyptic number.

780342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

780342 is a wasteful number, since it uses less digits than its factorization.

780342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130062.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 780342 is about 883.3696847866. The cubic root of 780342 is about 92.0650925607.

The spelling of 780342 in words is "seven hundred eighty thousand, three hundred forty-two".