1002045 has 16 divisors (see below), whose sum is σ = 1749312. Its totient is φ = 485760.

The previous prime is 1002017. The next prime is 1002049. The reversal of 1002045 is 5402001.

It is not a de Polignac number, because 1002045 - 2⁶ = 1001981 is a prime.

It is a Curzon number.

1002045 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2872 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (109332).

2^1002045 is an apocalyptic number.

1002045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1002045 is a deficient number, since it is larger than the sum of its proper divisors (747267).

1002045 is a wasteful number, since it uses less digits than its factorization.

1002045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6092.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1002045 is about 1001.0219777807. The cubic root of 1002045 is about 100.0681202524.

Adding to 1002045 its reverse (5402001), we get a palindrome (6404046).

It can be divided in two parts, 100 and 2045, that added together give a triangular number (2145 = T₆₅).

The spelling of 1002045 in words is "one million, two thousand, forty-five".