142786492641 has 27 divisors (see below), whose sum is σ = 223355771769. Its totient is φ = 87859541952.

The previous prime is 142786492591. The next prime is 142786492747. The reversal of 142786492641 is 146294687241.

The square root of 142786492641 is 377871.

It is a perfect power (a square), and thus also a powerful number.

142786492641 is a `hidden beast` number, since 1 + 42 + 78 + 6 + 492 + 6 + 41 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15191795025 + 127594697616 = 123255^2 + 357204^2 .

It is a de Polignac number, because none of the positive numbers 2^k-142786492641 is a prime.

It is a super-3 number, since 3×142786492641³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (142786499641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14732125 + ... + 14741813.

Almost surely, 2^142786492641 is an apocalyptic number.

142786492641 is the 377871-st square number.

142786492641 is the 188936-th centered octagonal number.

It is an amenable number.

142786492641 is a deficient number, since it is larger than the sum of its proper divisors (80569279128).

142786492641 is an frugal number, since it uses more digits than its factorization.

142786492641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19410 (or 9705 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 142786492641 in words is "one hundred forty-two billion, seven hundred eighty-six million, four hundred ninety-two thousand, six hundred forty-one".