1002745 has 16 divisors (see below), whose sum is σ = 1306368. Its totient is φ = 736000.

The previous prime is 1002739. The next prime is 1002751. The reversal of 1002745 is 5472001.

It is an interprime number because it is at equal distance from previous prime (1002739) and next prime (1002751).

It is not a de Polignac number, because 1002745 - 2⁵ = 1002713 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 3870 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (81648).

2^1002745 is an apocalyptic number.

It is an amenable number.

1002745 is a deficient number, since it is larger than the sum of its proper divisors (303623).

1002745 is a wasteful number, since it uses less digits than its factorization.

1002745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1002745 is about 1001.3715594124. The cubic root of 1002745 is about 100.0914164049.

Adding to 1002745 its reverse (5472001), we get a palindrome (6474746).

The spelling of 1002745 in words is "one million, two thousand, seven hundred forty-five".