142115647 has 2 divisors, whose sum is σ = 142115648. Its totient is φ = 142115646.

The previous prime is 142115627. The next prime is 142115657. The reversal of 142115647 is 746511241.

142115647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142115647 - 2¹¹ = 142113599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142115627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71057823 + 71057824.

It is an arithmetic number, because the mean of its divisors is an integer number (71057824).

Almost surely, 2^142115647 is an apocalyptic number.

142115647 is a deficient number, since it is larger than the sum of its proper divisors (1).

142115647 is an equidigital number, since it uses as much as digits as its factorization.

142115647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 142115647 is about 11921.2267405666. The cubic root of 142115647 is about 521.8519358590.

Adding to 142115647 its reverse (746511241), we get a palindrome (888626888).

The spelling of 142115647 in words is "one hundred forty-two million, one hundred fifteen thousand, six hundred forty-seven".