7871347742 has 4 divisors (see below), whose sum is σ = 11807021616. Its totient is φ = 3935673870.

The previous prime is 7871347711. The next prime is 7871347811. The reversal of 7871347742 is 2477431787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2477431787 = 17327 ⋅142981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1967836934 + ... + 1967836937.

It is an arithmetic number, because the mean of its divisors is an integer number (2951755404).

Almost surely, 2^7871347742 is an apocalyptic number.

7871347742 is a deficient number, since it is larger than the sum of its proper divisors (3935673874).

7871347742 is a wasteful number, since it uses less digits than its factorization.

7871347742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935673873.

The product of its digits is 1843968, while the sum is 50.

The square root of 7871347742 is about 88720.6162174272. The cubic root of 7871347742 is about 1989.2209893296.

The spelling of 7871347742 in words is "seven billion, eight hundred seventy-one million, three hundred forty-seven thousand, seven hundred forty-two".