20272141 has 4 divisors (see below), whose sum is σ = 20377372. Its totient is φ = 20166912.

The previous prime is 20272117. The next prime is 20272157. The reversal of 20272141 is 14127202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14127202 = 2 ⋅7063601.

It can be written as a sum of positive squares in 2 ways, for example, as 2175625 + 18096516 = 1475^2 + 4254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20272141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 52326 + ... + 52711.

It is an arithmetic number, because the mean of its divisors is an integer number (5094343).

Almost surely, 2^20272141 is an apocalyptic number.

It is an amenable number.

20272141 is a deficient number, since it is larger than the sum of its proper divisors (105231).

20272141 is a wasteful number, since it uses less digits than its factorization.

20272141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105230.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20272141 is about 4502.4594390177. The cubic root of 20272141 is about 272.6673931536.

Adding to 20272141 its reverse (14127202), we get a palindrome (34399343).

The spelling of 20272141 in words is "twenty million, two hundred seventy-two thousand, one hundred forty-one".