142729823 has 2 divisors, whose sum is σ = 142729824. Its totient is φ = 142729822.

The previous prime is 142729801. The next prime is 142729861. The reversal of 142729823 is 328927241.

It is an a-pointer prime, because the next prime (142729861) can be obtained adding 142729823 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (328927241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142729823 - 2¹⁰ = 142728799 is a prime.

It is a super-2 number, since 2×142729823² = 40743604747222658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142729123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71364911 + 71364912.

It is an arithmetic number, because the mean of its divisors is an integer number (71364912).

Almost surely, 2^142729823 is an apocalyptic number.

142729823 is a deficient number, since it is larger than the sum of its proper divisors (1).

142729823 is an equidigital number, since it uses as much as digits as its factorization.

142729823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 142729823 is about 11946.9587343390. The cubic root of 142729823 is about 522.6026116551.

The spelling of 142729823 in words is "one hundred forty-two million, seven hundred twenty-nine thousand, eight hundred twenty-three".