142419971 has 2 divisors, whose sum is σ = 142419972. Its totient is φ = 142419970.

The previous prime is 142419947. The next prime is 142419973. The reversal of 142419971 is 179914241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142419971 - 2¹⁴ = 142403587 is a prime.

Together with 142419973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142419973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71209985 + 71209986.

It is an arithmetic number, because the mean of its divisors is an integer number (71209986).

Almost surely, 2^142419971 is an apocalyptic number.

142419971 is a deficient number, since it is larger than the sum of its proper divisors (1).

142419971 is an equidigital number, since it uses as much as digits as its factorization.

142419971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 142419971 is about 11933.9838696053. The cubic root of 142419971 is about 522.2241652075.

The spelling of 142419971 in words is "one hundred forty-two million, four hundred nineteen thousand, nine hundred seventy-one".