142111427 has 2 divisors, whose sum is σ = 142111428. Its totient is φ = 142111426.

The previous prime is 142111379. The next prime is 142111439. The reversal of 142111427 is 724111241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142111427 - 2²⁰ = 141062851 is a prime.

It is a Chen prime.

It is equal to p_8024603 and since 142111427 and 8024603 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142111477) 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, 71055713 + 71055714.

It is an arithmetic number, because the mean of its divisors is an integer number (71055714).

Almost surely, 2^142111427 is an apocalyptic number.

142111427 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111427 is an equidigital number, since it uses as much as digits as its factorization.

142111427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 23.

The square root of 142111427 is about 11921.0497440452. The cubic root of 142111427 is about 521.8467704954.

Adding to 142111427 its reverse (724111241), we get a palindrome (866222668).

The spelling of 142111427 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred twenty-seven".