142857357121 has 2 divisors, whose sum is σ = 142857357122. Its totient is φ = 142857357120.

The previous prime is 142857357119. The next prime is 142857357151. The reversal of 142857357121 is 121753758241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125018816400 + 17838540721 = 353580^2 + 133561^2 .

It is a cyclic number.

It is not a de Polignac number, because 142857357121 - 2¹ = 142857357119 is a prime.

Together with 142857357119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142857357151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71428678560 + 71428678561.

It is an arithmetic number, because the mean of its divisors is an integer number (71428678561).

Almost surely, 2^142857357121 is an apocalyptic number.

It is an amenable number.

142857357121 is a deficient number, since it is larger than the sum of its proper divisors (1).

142857357121 is an equidigital number, since it uses as much as digits as its factorization.

142857357121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 46.

The spelling of 142857357121 in words is "one hundred forty-two billion, eight hundred fifty-seven million, three hundred fifty-seven thousand, one hundred twenty-one".