780242239 has 12 divisors (see below), whose sum is σ = 955399800. Its totient is φ = 633579408.

The previous prime is 780242233. The next prime is 780242249. The reversal of 780242239 is 932242087.

It is not a de Polignac number, because 780242239 - 2³ = 780242231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780242198 and 780242207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780242231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418104 + ... + 419965.

It is an arithmetic number, because the mean of its divisors is an integer number (79616650).

Almost surely, 2^780242239 is an apocalyptic number.

780242239 is a deficient number, since it is larger than the sum of its proper divisors (175157561).

780242239 is a wasteful number, since it uses less digits than its factorization.

780242239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838102 (or 838095 counting only the distinct ones).

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

The square root of 780242239 is about 27932.8165246543. The cubic root of 780242239 is about 920.6116911125.

The spelling of 780242239 in words is "seven hundred eighty million, two hundred forty-two thousand, two hundred thirty-nine".