142243039 has 2 divisors, whose sum is σ = 142243040. Its totient is φ = 142243038.

The previous prime is 142243037. The next prime is 142243051. The reversal of 142243039 is 930342241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142243039 - 2¹ = 142243037 is a prime.

Together with 142243037, it forms a pair of twin primes.

It is equal to p_8031682 and since 142243039 and 8031682 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 142242998 and 142243016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142243037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121519 + 71121520.

It is an arithmetic number, because the mean of its divisors is an integer number (71121520).

Almost surely, 2^142243039 is an apocalyptic number.

142243039 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243039 is an equidigital number, since it uses as much as digits as its factorization.

142243039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 142243039 is about 11926.5686180058. The cubic root of 142243039 is about 522.0078180790.

The spelling of 142243039 in words is "one hundred forty-two million, two hundred forty-three thousand, thirty-nine".