745442 has 8 divisors (see below), whose sum is σ = 1135056. Its totient is φ = 367092.

The previous prime is 745397. The next prime is 745471. The reversal of 745442 is 244547.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (141882).

2⁷⁴⁵⁴⁴² is an apocalyptic number.

745442 is a deficient number, since it is larger than the sum of its proper divisors (389614).

745442 is a wasteful number, since it uses less digits than its factorization.

745442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632.

The product of its digits is 4480, while the sum is 26.

The square root of 745442 is about 863.3898308412. The cubic root of 745442 is about 90.6716013990.

Adding to 745442 its reverse (244547), we get a palindrome (989989).

The spelling of 745442 in words is "seven hundred forty-five thousand, four hundred forty-two".