780041 has 2 divisors, whose sum is σ = 780042. Its totient is φ = 780040.

The previous prime is 780037. The next prime is 780047. The reversal of 780041 is 140087.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 384400 = 629^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 780041 - 2² = 780037 is a prime.

It is a Chen prime.

It is equal to p₆₂₄₇₁ and since 780041 and 62471 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 779995 and 780022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780047) 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 as a sum of consecutive naturals, namely, 390020 + 390021.

It is an arithmetic number, because the mean of its divisors is an integer number (390021).

2⁷⁸⁰⁰⁴¹ is an apocalyptic number.

It is an amenable number.

780041 is a deficient number, since it is larger than the sum of its proper divisors (1).

780041 is an equidigital number, since it uses as much as digits as its factorization.

780041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 780041 is about 883.1992980070. The cubic root of 780041 is about 92.0532536675.

The spelling of 780041 in words is "seven hundred eighty thousand, forty-one".