142647847 has 2 divisors, whose sum is σ = 142647848. Its totient is φ = 142647846.

The previous prime is 142647823. The next prime is 142647853. The reversal of 142647847 is 748746241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142647847 - 2¹⁹ = 142123559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142647347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71323923 + 71323924.

It is an arithmetic number, because the mean of its divisors is an integer number (71323924).

Almost surely, 2^142647847 is an apocalyptic number.

142647847 is a deficient number, since it is larger than the sum of its proper divisors (1).

142647847 is an equidigital number, since it uses as much as digits as its factorization.

142647847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 43.

The square root of 142647847 is about 11943.5274102754. The cubic root of 142647847 is about 522.5025412909.

The spelling of 142647847 in words is "one hundred forty-two million, six hundred forty-seven thousand, eight hundred forty-seven".