491742 has 24 divisors (see below), whose sum is σ = 1128816. Its totient is φ = 154176.

The previous prime is 491737. The next prime is 491747. The reversal of 491742 is 247194.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (491737) and next prime (491747).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491747) by changing a digit.

491742 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 11 ways as a sum of consecutive naturals, for example, 498 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (47034).

2⁴⁹¹⁷⁴² is an apocalyptic number.

491742 is an abundant number, since it is smaller than the sum of its proper divisors (637074).

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

491742 is a wasteful number, since it uses less digits than its factorization.

491742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632 (or 1629 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 491742 is about 701.2431817850. The cubic root of 491742 is about 78.9306660807.

It can be divided in two parts, 49 and 1742, that multiplied together give a palindrome (85358).

The spelling of 491742 in words is "four hundred ninety-one thousand, seven hundred forty-two".