142421183 has 2 divisors, whose sum is σ = 142421184. Its totient is φ = 142421182.

The previous prime is 142421159. The next prime is 142421239. The reversal of 142421183 is 381124241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142421183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142421113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71210591 + 71210592.

It is an arithmetic number, because the mean of its divisors is an integer number (71210592).

Almost surely, 2^142421183 is an apocalyptic number.

142421183 is a deficient number, since it is larger than the sum of its proper divisors (1).

142421183 is an equidigital number, since it uses as much as digits as its factorization.

142421183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 142421183 is about 11934.0346488520. The cubic root of 142421183 is about 522.2256465865.

The spelling of 142421183 in words is "one hundred forty-two million, four hundred twenty-one thousand, one hundred eighty-three".