127857020041 has 3 divisors (see below), whose sum is σ = 127857377613. Its totient is φ = 127856662470.

The previous prime is 127857019999. The next prime is 127857020087. The reversal of 127857020041 is 140020758721.

The square root of 127857020041 is 357571.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 140020758721 = 607 ⋅230676703.

It is not a de Polignac number, because 127857020041 - 2¹⁵ = 127856987273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127857021041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 178786 + ... + 536356.

It is an arithmetic number, because the mean of its divisors is an integer number (42619125871).

Almost surely, 2^127857020041 is an apocalyptic number.

127857020041 is the 357571-st square number.

127857020041 is the 178786-th centered octagonal number.

It is an amenable number.

127857020041 is a deficient number, since it is larger than the sum of its proper divisors (357572).

127857020041 is an frugal number, since it uses more digits than its factorization.

127857020041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715142 (or 357571 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

Adding to 127857020041 its reverse (140020758721), we get a palindrome (267877778762).

The spelling of 127857020041 in words is "one hundred twenty-seven billion, eight hundred fifty-seven million, twenty thousand, forty-one".