780423 has 12 divisors (see below), whose sum is σ = 1210680. Its totient is φ = 445872.

The previous prime is 780421. The next prime is 780433. The reversal of 780423 is 324087.

It is not a de Polignac number, because 780423 - 2¹ = 780421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780393 and 780402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780421) 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 11 ways as a sum of consecutive naturals, for example, 2508 + ... + 2801.

It is an arithmetic number, because the mean of its divisors is an integer number (100890).

2⁷⁸⁰⁴²³ is an apocalyptic number.

780423 is a deficient number, since it is larger than the sum of its proper divisors (430257).

780423 is a wasteful number, since it uses less digits than its factorization.

780423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326 (or 5319 counting only the distinct ones).

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

The square root of 780423 is about 883.4155307668. The cubic root of 780423 is about 92.0682779223.

The spelling of 780423 in words is "seven hundred eighty thousand, four hundred twenty-three".