142086638647 has 2 divisors, whose sum is σ = 142086638648. Its totient is φ = 142086638646.

The previous prime is 142086638521. The next prime is 142086638653. The reversal of 142086638647 is 746836680241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142086638647 - 2¹⁵ = 142086605879 is a prime.

It is a super-2 number, since 2×142086638647² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142086638747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71043319323 + 71043319324.

It is an arithmetic number, because the mean of its divisors is an integer number (71043319324).

Almost surely, 2^142086638647 is an apocalyptic number.

142086638647 is a deficient number, since it is larger than the sum of its proper divisors (1).

142086638647 is an equidigital number, since it uses as much as digits as its factorization.

142086638647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 142086638647 in words is "one hundred forty-two billion, eighty-six million, six hundred thirty-eight thousand, six hundred forty-seven".