20007241 has 4 divisors (see below), whose sum is σ = 20036484. Its totient is φ = 19978000.

The previous prime is 20007223. The next prime is 20007257. The reversal of 20007241 is 14270002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14270002 = 2 ⋅7135001.

It can be written as a sum of positive squares in 2 ways, for example, as 11363641 + 8643600 = 3371^2 + 2940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20007241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20007041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13570 + ... + 14971.

It is an arithmetic number, because the mean of its divisors is an integer number (5009121).

Almost surely, 2^20007241 is an apocalyptic number.

It is an amenable number.

20007241 is a deficient number, since it is larger than the sum of its proper divisors (29243).

20007241 is an equidigital number, since it uses as much as digits as its factorization.

20007241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29242.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20007241 is about 4472.9454501480. The cubic root of 20007241 is about 271.4745162035.

Adding to 20007241 its reverse (14270002), we get a palindrome (34277243).

The spelling of 20007241 in words is "twenty million, seven thousand, two hundred forty-one".