142442347 has 2 divisors, whose sum is σ = 142442348. Its totient is φ = 142442346.

The previous prime is 142442281. The next prime is 142442357. The reversal of 142442347 is 743244241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142442347 is a prime.

It is not a weakly prime, because it can be changed into another prime (142442357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71221173 + 71221174.

It is an arithmetic number, because the mean of its divisors is an integer number (71221174).

Almost surely, 2^142442347 is an apocalyptic number.

142442347 is a deficient number, since it is larger than the sum of its proper divisors (1).

142442347 is an equidigital number, since it uses as much as digits as its factorization.

142442347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 31.

The square root of 142442347 is about 11934.9213235781. The cubic root of 142442347 is about 522.2515131417.

Adding to 142442347 its reverse (743244241), we get a palindrome (885686588).

It can be divided in two parts, 14244234 and 7, that added together give a palindrome (14244241).

The spelling of 142442347 in words is "one hundred forty-two million, four hundred forty-two thousand, three hundred forty-seven".