142028647 has 2 divisors, whose sum is σ = 142028648. Its totient is φ = 142028646.

The previous prime is 142028617. The next prime is 142028651. The reversal of 142028647 is 746820241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142028647 - 2¹⁵ = 141995879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142028617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71014323 + 71014324.

It is an arithmetic number, because the mean of its divisors is an integer number (71014324).

Almost surely, 2^142028647 is an apocalyptic number.

142028647 is a deficient number, since it is larger than the sum of its proper divisors (1).

142028647 is an equidigital number, since it uses as much as digits as its factorization.

142028647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 142028647 is about 11917.5772286149. The cubic root of 142028647 is about 521.7454254523.

Adding to 142028647 its reverse (746820241), we get a palindrome (888848888).

The spelling of 142028647 in words is "one hundred forty-two million, twenty-eight thousand, six hundred forty-seven".