20240143 has 16 divisors (see below), whose sum is σ = 25825536. Its totient is φ = 15402240.

The previous prime is 20240141. The next prime is 20240153. The reversal of 20240143 is 34104202.

It is not a de Polignac number, because 20240143 - 2¹ = 20240141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (1614096).

Almost surely, 2^20240143 is an apocalyptic number.

20240143 is a deficient number, since it is larger than the sum of its proper divisors (5585393).

20240143 is a wasteful number, since it uses less digits than its factorization.

20240143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6174.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20240143 is about 4498.9046444663. The cubic root of 20240143 is about 272.5238561725.

Adding to 20240143 its reverse (34104202), we get a palindrome (54344345).

The spelling of 20240143 in words is "twenty million, two hundred forty thousand, one hundred forty-three".