1002945 has 8 divisors (see below), whose sum is σ = 1604736. Its totient is φ = 534896.

The previous prime is 1002931. The next prime is 1002973. The reversal of 1002945 is 5492001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002945 - 2⁴ = 1002929 is a prime.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 33417 + ... + 33446.

It is an arithmetic number, because the mean of its divisors is an integer number (200592).

2^1002945 is an apocalyptic number.

1002945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1002945 is a deficient number, since it is larger than the sum of its proper divisors (601791).

1002945 is an equidigital number, since it uses as much as digits as its factorization.

1002945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66871.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1002945 is about 1001.4714174653. The cubic root of 1002945 is about 100.0980704571.

Adding to 1002945 its reverse (5492001), we get a palindrome (6494946).

The spelling of 1002945 in words is "one million, two thousand, nine hundred forty-five".