142520143 has 2 divisors, whose sum is σ = 142520144. Its totient is φ = 142520142.

The previous prime is 142520137. The next prime is 142520171. The reversal of 142520143 is 341025241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142520143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142520243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71260071 + 71260072.

It is an arithmetic number, because the mean of its divisors is an integer number (71260072).

Almost surely, 2^142520143 is an apocalyptic number.

142520143 is a deficient number, since it is larger than the sum of its proper divisors (1).

142520143 is an equidigital number, since it uses as much as digits as its factorization.

142520143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 142520143 is about 11938.1800539278. The cubic root of 142520143 is about 522.3465730851.

Adding to 142520143 its reverse (341025241), we get a palindrome (483545384).

The spelling of 142520143 in words is "one hundred forty-two million, five hundred twenty thousand, one hundred forty-three".