142248439 has 2 divisors, whose sum is σ = 142248440. Its totient is φ = 142248438.

The previous prime is 142248397. The next prime is 142248473. The reversal of 142248439 is 934842241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142248439 - 2¹⁹ = 141724151 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142248398 and 142248407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142248539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71124219 + 71124220.

It is an arithmetic number, because the mean of its divisors is an integer number (71124220).

Almost surely, 2^142248439 is an apocalyptic number.

142248439 is a deficient number, since it is larger than the sum of its proper divisors (1).

142248439 is an equidigital number, since it uses as much as digits as its factorization.

142248439 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 142248439 is about 11926.7950011728. The cubic root of 142248439 is about 522.0144236900.

The spelling of 142248439 in words is "one hundred forty-two million, two hundred forty-eight thousand, four hundred thirty-nine".