1749442 has 4 divisors (see below), whose sum is σ = 2624166. Its totient is φ = 874720.

The previous prime is 1749439. The next prime is 1749443. The reversal of 1749442 is 2449471.

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., 1301881 + 447561 = 1141^2 + 669^2 .

It is a super-2 number, since 2×1749442² = 6121094622728, which contains 22 as substring.

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 nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1749443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437359 + ... + 437362.

2^1749442 is an apocalyptic number.

1749442 is a deficient number, since it is larger than the sum of its proper divisors (874724).

1749442 is an equidigital number, since it uses as much as digits as its factorization.

1749442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874723.

The product of its digits is 8064, while the sum is 31.

The square root of 1749442 is about 1322.6647345416. The cubic root of 1749442 is about 120.4943036626.

The spelling of 1749442 in words is "one million, seven hundred forty-nine thousand, four hundred forty-two".