142224947 has 2 divisors, whose sum is σ = 142224948. Its totient is φ = 142224946.

The previous prime is 142224911. The next prime is 142224949. The reversal of 142224947 is 749422241.

142224947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142224947 - 2¹⁰ = 142223923 is a prime.

Together with 142224949, 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 (142224949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71112473 + 71112474.

It is an arithmetic number, because the mean of its divisors is an integer number (71112474).

Almost surely, 2^142224947 is an apocalyptic number.

142224947 is a deficient number, since it is larger than the sum of its proper divisors (1).

142224947 is an equidigital number, since it uses as much as digits as its factorization.

142224947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 142224947 is about 11925.8101192330. The cubic root of 142224947 is about 521.9856856172.

It can be divided in two parts, 1422249 and 47, that multiplied together give a triangular number (66845703 = T₁₁₅₆₂).

The spelling of 142224947 in words is "one hundred forty-two million, two hundred twenty-four thousand, nine hundred forty-seven".