142857748861 has 4 divisors (see below), whose sum is σ = 143187674812. Its totient is φ = 142527822912.

The previous prime is 142857748823. The next prime is 142857748897. The reversal of 142857748861 is 168847758241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17254136025 + 125603612836 = 131355^2 + 354406^2 .

It is a cyclic number.

It is not a de Polignac number, because 142857748861 - 2¹⁵ = 142857716093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142857748861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142857745861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164962326 + ... + 164963191.

It is an arithmetic number, because the mean of its divisors is an integer number (35796918703).

Almost surely, 2^142857748861 is an apocalyptic number.

It is an amenable number.

142857748861 is a deficient number, since it is larger than the sum of its proper divisors (329925951).

142857748861 is an equidigital number, since it uses as much as digits as its factorization.

142857748861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329925950.

The product of its digits is 24084480, while the sum is 61.

The spelling of 142857748861 in words is "one hundred forty-two billion, eight hundred fifty-seven million, seven hundred forty-eight thousand, eight hundred sixty-one".