1742449 has 4 divisors (see below), whose sum is σ = 1844964. Its totient is φ = 1639936.

The previous prime is 1742443. The next prime is 1742453. The reversal of 1742449 is 9442471.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1364224 + 378225 = 1168^2 + 615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1742449 is a prime.

It is a super-2 number, since 2×1742449² = 6072257035202, 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 Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1742449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1742443) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 51232 + ... + 51265.

It is an arithmetic number, because the mean of its divisors is an integer number (461241).

2^1742449 is an apocalyptic number.

It is an amenable number.

1742449 is a deficient number, since it is larger than the sum of its proper divisors (102515).

1742449 is a wasteful number, since it uses less digits than its factorization.

1742449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102514.

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

The square root of 1742449 is about 1320.0185604756. The cubic root of 1742449 is about 120.3335396611. Note that the first 3 decimals are identical.

It can be divided in two parts, 17424 and 49, that multiplied together give a square (853776 = 924²).

The spelling of 1742449 in words is "one million, seven hundred forty-two thousand, four hundred forty-nine".