20041045 has 16 divisors (see below), whose sum is σ = 25664688. Its totient is φ = 14970880.

The previous prime is 20041039. The next prime is 20041051. The reversal of 20041045 is 54014002.

It is an interprime number because it is at equal distance from previous prime (20041039) and next prime (20041051).

It can be written as a sum of positive squares in 8 ways, for example, as 1179396 + 18861649 = 1086^2 + 4343^2 .

It is not a de Polignac number, because 20041045 - 2³ = 20041037 is a prime.

It is a Duffinian number.

It is a congruent 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, 10785 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (1604043).

Almost surely, 2^20041045 is an apocalyptic number.

It is an amenable number.

20041045 is a deficient number, since it is larger than the sum of its proper divisors (5623643).

20041045 is a wasteful number, since it uses less digits than its factorization.

20041045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20041045 is about 4476.7225734906. The cubic root of 20041045 is about 271.6273235626.

Adding to 20041045 its reverse (54014002), we get a palindrome (74055047).

The spelling of 20041045 in words is "twenty million, forty-one thousand, forty-five".