20041245 has 72 divisors (see below), whose sum is σ = 41347800. Its totient is φ = 8951040.

The previous prime is 20041243. The next prime is 20041253. The reversal of 20041245 is 54214002.

It can be written as a sum of positive squares in 4 ways, for example, as 777924 + 19263321 = 882^2 + 4389^2 .

It is not a de Polignac number, because 20041245 - 2¹ = 20041243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041243) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 134431 + ... + 134579.

It is an arithmetic number, because the mean of its divisors is an integer number (574275).

Almost surely, 2^20041245 is an apocalyptic number.

It is an amenable number.

20041245 is an abundant number, since it is smaller than the sum of its proper divisors (21306555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20041245 is a wasteful number, since it uses less digits than its factorization.

20041245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20041245 is about 4476.7449112050. The cubic root of 20041245 is about 271.6282271297.

Adding to 20041245 its reverse (54214002), we get a palindrome (74255247).

It can be divided in two parts, 2004 and 1245, that added together give a square (3249 = 57²).

The spelling of 20041245 in words is "twenty million, forty-one thousand, two hundred forty-five".