709942 has 4 divisors (see below), whose sum is σ = 1064916. Its totient is φ = 354970.

The previous prime is 709927. The next prime is 709957. The reversal of 709942 is 249907.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (709927) and next prime (709957).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 177484 + ... + 177487.

It is an arithmetic number, because the mean of its divisors is an integer number (266229).

2⁷⁰⁹⁹⁴² is an apocalyptic number.

709942 is a deficient number, since it is larger than the sum of its proper divisors (354974).

709942 is a wasteful number, since it uses less digits than its factorization.

709942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354973.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 709942 is about 842.5805599466. The cubic root of 709942 is about 89.2087847529.

The spelling of 709942 in words is "seven hundred nine thousand, nine hundred forty-two".