7142068861 has 4 divisors (see below), whose sum is σ = 7145114272. Its totient is φ = 7139023452.

The previous prime is 7142068823. The next prime is 7142068867. The reversal of 7142068861 is 1688602417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7142068861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142068867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519185 + ... + 1523878.

It is an arithmetic number, because the mean of its divisors is an integer number (1786278568).

Almost surely, 2^7142068861 is an apocalyptic number.

It is an amenable number.

7142068861 is a deficient number, since it is larger than the sum of its proper divisors (3045411).

7142068861 is a wasteful number, since it uses less digits than its factorization.

7142068861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045410.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 7142068861 is about 84510.7618058197. The cubic root of 7142068861 is about 1925.7859374429.

The spelling of 7142068861 in words is "seven billion, one hundred forty-two million, sixty-eight thousand, eight hundred sixty-one".