142727947 has 4 divisors (see below), whose sum is σ = 142863280. Its totient is φ = 142592616.

The previous prime is 142727933. The next prime is 142727953. The reversal of 142727947 is 749727241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749727241 = 53 ⋅14145797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142727947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142727047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66072 + ... + 68197.

It is an arithmetic number, because the mean of its divisors is an integer number (35715820).

Almost surely, 2^142727947 is an apocalyptic number.

142727947 is a deficient number, since it is larger than the sum of its proper divisors (135333).

142727947 is a wasteful number, since it uses less digits than its factorization.

142727947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135332.

The product of its digits is 197568, while the sum is 43.

The square root of 142727947 is about 11946.8802203755. The cubic root of 142727947 is about 522.6003219986.

The spelling of 142727947 in words is "one hundred forty-two million, seven hundred twenty-seven thousand, nine hundred forty-seven".