142244171 has 2 divisors, whose sum is σ = 142244172. Its totient is φ = 142244170.

The previous prime is 142244143. The next prime is 142244183. The reversal of 142244171 is 171442241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142244171 - 2⁶ = 142244107 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142244171.

It is not a weakly prime, because it can be changed into another prime (142244111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71122085 + 71122086.

It is an arithmetic number, because the mean of its divisors is an integer number (71122086).

Almost surely, 2^142244171 is an apocalyptic number.

142244171 is a deficient number, since it is larger than the sum of its proper divisors (1).

142244171 is an equidigital number, since it uses as much as digits as its factorization.

142244171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 26.

The square root of 142244171 is about 11926.6160749812. The cubic root of 142244171 is about 522.0092028246.

The spelling of 142244171 in words is "one hundred forty-two million, two hundred forty-four thousand, one hundred seventy-one".