142696627281 has 12 divisors (see below), whose sum is σ = 221972531508. Its totient is φ = 87813309024.

The previous prime is 142696627247. The next prime is 142696627303. The reversal of 142696627281 is 182726696241.

142696627281 is a `hidden beast` number, since 1 + 4 + 2 + 6 + 9 + 6 + 627 + 2 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 69374818881 + 73321808400 = 263391^2 + 270780^2 .

It is not a de Polignac number, because 142696627281 - 2²² = 142692432977 is a prime.

It is a super-2 number, since 2×142696627281² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142696622281) 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 11 ways as a sum of consecutive naturals, for example, 609814530 + ... + 609814763.

It is an arithmetic number, because the mean of its divisors is an integer number (18497710959).

Almost surely, 2^142696627281 is an apocalyptic number.

It is an amenable number.

142696627281 is a deficient number, since it is larger than the sum of its proper divisors (79275904227).

142696627281 is a wasteful number, since it uses less digits than its factorization.

142696627281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219629312 (or 1219629309 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 142696627281 in words is "one hundred forty-two billion, six hundred ninety-six million, six hundred twenty-seven thousand, two hundred eighty-one".