142111297 has 2 divisors, whose sum is σ = 142111298. Its totient is φ = 142111296.

The previous prime is 142111271. The next prime is 142111331. The reversal of 142111297 is 792111241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109746576 + 32364721 = 10476^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 142111297 - 2⁷ = 142111169 is a prime.

It is not a weakly prime, because it can be changed into another prime (142111267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71055648 + 71055649.

It is an arithmetic number, because the mean of its divisors is an integer number (71055649).

Almost surely, 2^142111297 is an apocalyptic number.

It is an amenable number.

142111297 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111297 is an equidigital number, since it uses as much as digits as its factorization.

142111297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 28.

The square root of 142111297 is about 11921.0442915040. The cubic root of 142111297 is about 521.8466113712.

The spelling of 142111297 in words is "one hundred forty-two million, one hundred eleven thousand, two hundred ninety-seven".