780542 has 16 divisors (see below), whose sum is σ = 1351680. Its totient is φ = 331128.

The previous prime is 780523. The next prime is 780553. The reversal of 780542 is 245087.

It is a congruent number.

It is an unprimeable number.

780542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (84480).

2⁷⁸⁰⁵⁴² is an apocalyptic number.

780542 is a deficient number, since it is larger than the sum of its proper divisors (571138).

780542 is a wasteful number, since it uses less digits than its factorization.

780542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 780542 is about 883.4828804227. The cubic root of 780542 is about 92.0729572515.

The spelling of 780542 in words is "seven hundred eighty thousand, five hundred forty-two".