491942 has 16 divisors (see below), whose sum is σ = 820800. Its totient is φ = 219240.

The previous prime is 491923. The next prime is 491951. The reversal of 491942 is 249194.

It is a congruent number.

It is an unprimeable number.

491942 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, 1109 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2⁴⁹¹⁹⁴² is an apocalyptic number.

491942 is a deficient number, since it is larger than the sum of its proper divisors (328858).

491942 is a wasteful number, since it uses less digits than its factorization.

491942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 2592, while the sum is 29.

The square root of 491942 is about 701.3857711702. The cubic root of 491942 is about 78.9413654539.

It can be divided in two parts, 49 and 1942, that added together give a palindrome (1991).

The spelling of 491942 in words is "four hundred ninety-one thousand, nine hundred forty-two".