745042 has 12 divisors (see below), whose sum is σ = 1188090. Its totient is φ = 350336.

The previous prime is 745037. The next prime is 745051. The reversal of 745042 is 240547.

It can be written as a sum of positive squares in 3 ways, for example, as 741321 + 3721 = 861^2 + 61^2 .

It is an unprimeable number.

745042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 67 + ... + 1222.

2⁷⁴⁵⁰⁴² is an apocalyptic number.

745042 is a deficient number, since it is larger than the sum of its proper divisors (443048).

745042 is a wasteful number, since it uses less digits than its factorization.

745042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 745042 is about 863.1581546855. The cubic root of 745042 is about 90.6553805396.

Adding to 745042 its reverse (240547), we get a palindrome (985589).

The spelling of 745042 in words is "seven hundred forty-five thousand, forty-two".