779742 has 12 divisors (see below), whose sum is σ = 1689480. Its totient is φ = 259908.

The previous prime is 779731. The next prime is 779747. The reversal of 779742 is 247977.

It is a junction number, because it is equal to n+sod(n) for n = 779697 and 779706.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 779742.

It is not an unprimeable number, because it can be changed into a prime (779747) by changing a digit.

779742 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 5 ways as a sum of consecutive naturals, for example, 21642 + ... + 21677.

It is an arithmetic number, because the mean of its divisors is an integer number (140790).

2⁷⁷⁹⁷⁴² is an apocalyptic number.

779742 is an abundant number, since it is smaller than the sum of its proper divisors (909738).

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

779742 is a wasteful number, since it uses less digits than its factorization.

779742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43327 (or 43324 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 779742 is about 883.0300108150. The cubic root of 779742 is about 92.0414904225.

It can be divided in two parts, 779 and 742, that added together give a square (1521 = 39²).

The spelling of 779742 in words is "seven hundred seventy-nine thousand, seven hundred forty-two".