142646279697 has 6 divisors (see below), whose sum is σ = 206044626242. Its totient is φ = 95097519792.

The previous prime is 142646279653. The next prime is 142646279719. The reversal of 142646279697 is 796972646241.

It is a happy number.

142646279697 is a `hidden beast` number, since 1 + 42 + 6 + 462 + 79 + 69 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85287945681 + 57358334016 = 292041^2 + 239496^2 .

It is not a de Polignac number, because 142646279697 - 2⁸ = 142646279441 is a prime.

It is a super-2 number, since 2×142646279697² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142646279617) 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 in 5 ways as a sum of consecutive naturals, for example, 7924793308 + ... + 7924793325.

Almost surely, 2^142646279697 is an apocalyptic number.

It is an amenable number.

142646279697 is a deficient number, since it is larger than the sum of its proper divisors (63398346545).

142646279697 is a wasteful number, since it uses less digits than its factorization.

142646279697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849586639 (or 15849586636 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 142646279697 in words is "one hundred forty-two billion, six hundred forty-six million, two hundred seventy-nine thousand, six hundred ninety-seven".