6142106881 has 4 divisors (see below), whose sum is σ = 6353903700. Its totient is φ = 5930310064.

The previous prime is 6142106869. The next prime is 6142106891. The reversal of 6142106881 is 1886012416.

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 1543232656 + 4598874225 = 39284^2 + 67815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6142106881 is a prime.

It is a super-2 number, since 2×6142106881² = 75450953875255096322, which contains 22 as substring.

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 6142106881.

It is not an unprimeable number, because it can be changed into a prime (6142106891) 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, 105898366 + ... + 105898423.

It is an arithmetic number, because the mean of its divisors is an integer number (1588475925).

Almost surely, 2^6142106881 is an apocalyptic number.

It is an amenable number.

6142106881 is a deficient number, since it is larger than the sum of its proper divisors (211796819).

6142106881 is a wasteful number, since it uses less digits than its factorization.

6142106881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211796818.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 6142106881 is about 78371.5948606381. The cubic root of 6142106881 is about 1831.3546541533.

The spelling of 6142106881 in words is "six billion, one hundred forty-two million, one hundred six thousand, eight hundred eighty-one".