709842 has 16 divisors (see below), whose sum is σ = 1622592. Its totient is φ = 202800.

The previous prime is 709831. The next prime is 709843. The reversal of 709842 is 248907.

709842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 709842.

It is not an unprimeable number, because it can be changed into a prime (709843) by changing a digit.

709842 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, 8409 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (101412).

2⁷⁰⁹⁸⁴² is an apocalyptic number.

709842 is an abundant number, since it is smaller than the sum of its proper divisors (912750).

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

709842 is a wasteful number, since it uses less digits than its factorization.

709842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16913.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 709842 is about 842.5212163501. The cubic root of 709842 is about 89.2045960082.

It can be divided in two parts, 7098 and 42, that multiplied together give a square (298116 = 546²).

The spelling of 709842 in words is "seven hundred nine thousand, eight hundred forty-two".