142111379 has 2 divisors, whose sum is σ = 142111380. Its totient is φ = 142111378.

The previous prime is 142111357. The next prime is 142111427. The reversal of 142111379 is 973111241.

It is a weak prime.

It is an emirp because it is prime and its reverse (973111241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142111379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (142113379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71055689 + 71055690.

It is an arithmetic number, because the mean of its divisors is an integer number (71055690).

Almost surely, 2^142111379 is an apocalyptic number.

142111379 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111379 is an equidigital number, since it uses as much as digits as its factorization.

142111379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 142111379 is about 11921.0477307995. The cubic root of 142111379 is about 521.8467117419.

The spelling of 142111379 in words is "one hundred forty-two million, one hundred eleven thousand, three hundred seventy-nine".