1745642 has 8 divisors (see below), whose sum is σ = 2624196. Its totient is φ = 870912.

The previous prime is 1745629. The next prime is 1745647. The reversal of 1745642 is 2465471.

It can be written as a sum of positive squares in 2 ways, for example, as 1666681 + 78961 = 1291^2 + 281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1745647) 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, 938 + ... + 2090.

2^1745642 is an apocalyptic number.

1745642 is a deficient number, since it is larger than the sum of its proper divisors (878554).

1745642 is a wasteful number, since it uses less digits than its factorization.

1745642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912.

The product of its digits is 6720, while the sum is 29.

The square root of 1745642 is about 1321.2274595996. The cubic root of 1745642 is about 120.4069976765.

The spelling of 1745642 in words is "one million, seven hundred forty-five thousand, six hundred forty-two".