7166139842 has 8 divisors (see below), whose sum is σ = 10752569100. Its totient is φ = 3581950144.

The previous prime is 7166139817. The next prime is 7166139913. The reversal of 7166139842 is 2489316617.

It can be written as a sum of positive squares in 2 ways, for example, as 6738932281 + 427207561 = 82091^2 + 20669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551867 + ... + 564702.

Almost surely, 2^7166139842 is an apocalyptic number.

7166139842 is a deficient number, since it is larger than the sum of its proper divisors (3586429258).

7166139842 is a wasteful number, since it uses less digits than its factorization.

7166139842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119780.

The product of its digits is 435456, while the sum is 47.

The square root of 7166139842 is about 84653.0557156681. The cubic root of 7166139842 is about 1927.9470095067.

The spelling of 7166139842 in words is "seven billion, one hundred sixty-six million, one hundred thirty-nine thousand, eight hundred forty-two".