142157143 has 2 divisors, whose sum is σ = 142157144. Its totient is φ = 142157142.

The previous prime is 142157033. The next prime is 142157173. The reversal of 142157143 is 341751241.

142157143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142157143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142157173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71078571 + 71078572.

It is an arithmetic number, because the mean of its divisors is an integer number (71078572).

Almost surely, 2^142157143 is an apocalyptic number.

142157143 is a deficient number, since it is larger than the sum of its proper divisors (1).

142157143 is an equidigital number, since it uses as much as digits as its factorization.

142157143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 142157143 is about 11922.9670384515. The cubic root of 142157143 is about 521.9027223396.

It can be divided in two parts, 1421 and 57143, that added together give a square (58564 = 242²).

The spelling of 142157143 in words is "one hundred forty-two million, one hundred fifty-seven thousand, one hundred forty-three".