1791442 has 4 divisors (see below), whose sum is σ = 2687166. Its totient is φ = 895720.

The previous prime is 1791431. The next prime is 1791451. The reversal of 1791442 is 2441971.

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

It can be written as a sum of positive squares in only one way, i.e., 1771561 + 19881 = 1331^2 + 141^2 .

It is a super-3 number, since 3×1791442³ = 17247633317349368664, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1791442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447859 + ... + 447862.

2^1791442 is an apocalyptic number.

1791442 is a deficient number, since it is larger than the sum of its proper divisors (895724).

1791442 is an equidigital number, since it uses as much as digits as its factorization.

1791442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895723.

The product of its digits is 2016, while the sum is 28.

The square root of 1791442 is about 1338.4476082387. The cubic root of 1791442 is about 121.4509502995.

It can be divided in two parts, 17914 and 42, that added together give a square (17956 = 134²).

The spelling of 1791442 in words is "one million, seven hundred ninety-one thousand, four hundred forty-two".