42718774191 has 8 divisors (see below), whose sum is σ = 58922447280. Its totient is φ = 27497141952.

The previous prime is 42718774159. The next prime is 42718774201. The reversal of 42718774191 is 19147781724.

It is a happy number.

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

It is not a de Polignac number, because 42718774191 - 2⁵ = 42718774159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42718774991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245510110 + ... + 245510283.

It is an arithmetic number, because the mean of its divisors is an integer number (7365305910).

Almost surely, 2^42718774191 is an apocalyptic number.

42718774191 is a deficient number, since it is larger than the sum of its proper divisors (16203673089).

42718774191 is a wasteful number, since it uses less digits than its factorization.

42718774191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491020425.

The product of its digits is 790272, while the sum is 51.

The spelling of 42718774191 in words is "forty-two billion, seven hundred eighteen million, seven hundred seventy-four thousand, one hundred ninety-one".