142838567 has 2 divisors, whose sum is σ = 142838568. Its totient is φ = 142838566.

The previous prime is 142838519. The next prime is 142838617. The reversal of 142838567 is 765838241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142838567 is a prime.

It is a super-2 number, since 2×142838567² = 40805712445226978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142838867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71419283 + 71419284.

It is an arithmetic number, because the mean of its divisors is an integer number (71419284).

Almost surely, 2^142838567 is an apocalyptic number.

142838567 is a deficient number, since it is larger than the sum of its proper divisors (1).

142838567 is an equidigital number, since it uses as much as digits as its factorization.

142838567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 142838567 is about 11951.5089842245. The cubic root of 142838567 is about 522.7352993458.

The spelling of 142838567 in words is "one hundred forty-two million, eight hundred thirty-eight thousand, five hundred sixty-seven".