142605647 has 2 divisors, whose sum is σ = 142605648. Its totient is φ = 142605646.

The previous prime is 142605643. The next prime is 142605649. The reversal of 142605647 is 746506241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142605647 - 2² = 142605643 is a prime.

Together with 142605649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142605643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71302823 + 71302824.

It is an arithmetic number, because the mean of its divisors is an integer number (71302824).

Almost surely, 2^142605647 is an apocalyptic number.

142605647 is a deficient number, since it is larger than the sum of its proper divisors (1).

142605647 is an equidigital number, since it uses as much as digits as its factorization.

142605647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 142605647 is about 11941.7606323356. The cubic root of 142605647 is about 522.4510116384.

The spelling of 142605647 in words is "one hundred forty-two million, six hundred five thousand, six hundred forty-seven".