142296221 has 2 divisors, whose sum is σ = 142296222. Its totient is φ = 142296220.

The previous prime is 142296181. The next prime is 142296241. The reversal of 142296221 is 122692241.

142296221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140683321 + 1612900 = 11861^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 142296221 - 2⁶ = 142296157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142296241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71148110 + 71148111.

It is an arithmetic number, because the mean of its divisors is an integer number (71148111).

Almost surely, 2^142296221 is an apocalyptic number.

It is an amenable number.

142296221 is a deficient number, since it is larger than the sum of its proper divisors (1).

142296221 is an equidigital number, since it uses as much as digits as its factorization.

142296221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 142296221 is about 11928.7979696196. The cubic root of 142296221 is about 522.0728662783.

The spelling of 142296221 in words is "one hundred forty-two million, two hundred ninety-six thousand, two hundred twenty-one".