142031143 has 2 divisors, whose sum is σ = 142031144. Its totient is φ = 142031142.

The previous prime is 142031081. The next prime is 142031161. The reversal of 142031143 is 341130241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142031143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142031143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142031543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71015571 + 71015572.

It is an arithmetic number, because the mean of its divisors is an integer number (71015572).

Almost surely, 2^142031143 is an apocalyptic number.

142031143 is a deficient number, since it is larger than the sum of its proper divisors (1).

142031143 is an equidigital number, since it uses as much as digits as its factorization.

142031143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 142031143 is about 11917.6819474258. The cubic root of 142031143 is about 521.7484818051.

Adding to 142031143 its reverse (341130241), we get a palindrome (483161384).

The spelling of 142031143 in words is "one hundred forty-two million, thirty-one thousand, one hundred forty-three".