20070143 has 2 divisors, whose sum is σ = 20070144. Its totient is φ = 20070142.

The previous prime is 20070139. The next prime is 20070161. The reversal of 20070143 is 34107002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20070143 - 2² = 20070139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20070103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10035071 + 10035072.

It is an arithmetic number, because the mean of its divisors is an integer number (10035072).

Almost surely, 2^20070143 is an apocalyptic number.

20070143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20070143 is an equidigital number, since it uses as much as digits as its factorization.

20070143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20070143 is about 4479.9713168725. The cubic root of 20070143 is about 271.7587203986.

Adding to 20070143 its reverse (34107002), we get a palindrome (54177145).

The spelling of 20070143 in words is "twenty million, seventy thousand, one hundred forty-three".