142838623 has 2 divisors, whose sum is σ = 142838624. Its totient is φ = 142838622.

The previous prime is 142838621. The next prime is 142838627. The reversal of 142838623 is 326838241.

142838623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142838623 - 2¹ = 142838621 is a prime.

It is a super-2 number, since 2×142838623² = 40805744441072258, which contains 22 as substring.

Together with 142838621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142838621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71419311 + 71419312.

It is an arithmetic number, because the mean of its divisors is an integer number (71419312).

Almost surely, 2^142838623 is an apocalyptic number.

142838623 is a deficient number, since it is larger than the sum of its proper divisors (1).

142838623 is an equidigital number, since it uses as much as digits as its factorization.

142838623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The square root of 142838623 is about 11951.5113270247. The cubic root of 142838623 is about 522.7353676588.

The spelling of 142838623 in words is "one hundred forty-two million, eight hundred thirty-eight thousand, six hundred twenty-three".