20014143 has 4 divisors (see below), whose sum is σ = 26685528. Its totient is φ = 13342760.

The previous prime is 20014139. The next prime is 20014153. The reversal of 20014143 is 34141002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20014143 - 2² = 20014139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20014133) 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 3 ways as a sum of consecutive naturals, for example, 3335688 + ... + 3335693.

It is an arithmetic number, because the mean of its divisors is an integer number (6671382).

Almost surely, 2^20014143 is an apocalyptic number.

20014143 is a deficient number, since it is larger than the sum of its proper divisors (6671385).

20014143 is an equidigital number, since it uses as much as digits as its factorization.

20014143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671384.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20014143 is about 4473.7169110260. The cubic root of 20014143 is about 271.5057299307.

Adding to 20014143 its reverse (34141002), we get a palindrome (54155145).

The spelling of 20014143 in words is "twenty million, fourteen thousand, one hundred forty-three".