142242311 has 2 divisors, whose sum is σ = 142242312. Its totient is φ = 142242310.

The previous prime is 142242299. The next prime is 142242367. The reversal of 142242311 is 113242241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142242311 - 2²⁶ = 75133447 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 (142242211) 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, 71121155 + 71121156.

It is an arithmetic number, because the mean of its divisors is an integer number (71121156).

Almost surely, 2^142242311 is an apocalyptic number.

142242311 is a deficient number, since it is larger than the sum of its proper divisors (1).

142242311 is an equidigital number, since it uses as much as digits as its factorization.

142242311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 142242311 is about 11926.5380978723. The cubic root of 142242311 is about 522.0069275319.

Adding to 142242311 its reverse (113242241), we get a palindrome (255484552).

The spelling of 142242311 in words is "one hundred forty-two million, two hundred forty-two thousand, three hundred eleven".