142356647 has 2 divisors, whose sum is σ = 142356648. Its totient is φ = 142356646.

The previous prime is 142356631. The next prime is 142356653. The reversal of 142356647 is 746653241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142356647 - 2⁴ = 142356631 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142356647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142356667) 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, 71178323 + 71178324.

It is an arithmetic number, because the mean of its divisors is an integer number (71178324).

Almost surely, 2^142356647 is an apocalyptic number.

142356647 is a deficient number, since it is larger than the sum of its proper divisors (1).

142356647 is an equidigital number, since it uses as much as digits as its factorization.

142356647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 142356647 is about 11931.3304790371. The cubic root of 142356647 is about 522.1467551242.

The spelling of 142356647 in words is "one hundred forty-two million, three hundred fifty-six thousand, six hundred forty-seven".