142242851 has 2 divisors, whose sum is σ = 142242852. Its totient is φ = 142242850.

The previous prime is 142242829. The next prime is 142242871. The reversal of 142242851 is 158242241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142242851 is a prime.

It is a Chen prime.

It is equal to p_8031674 and since 142242851 and 8031674 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 (142242811) 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, 71121425 + 71121426.

It is an arithmetic number, because the mean of its divisors is an integer number (71121426).

Almost surely, 2^142242851 is an apocalyptic number.

142242851 is a deficient number, since it is larger than the sum of its proper divisors (1).

142242851 is an equidigital number, since it uses as much as digits as its factorization.

142242851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 29.

The square root of 142242851 is about 11926.5607364403. The cubic root of 142242851 is about 522.0075881028.

The spelling of 142242851 in words is "one hundred forty-two million, two hundred forty-two thousand, eight hundred fifty-one".