71918042 has 8 divisors (see below), whose sum is σ = 123288096. Its totient is φ = 30822012.

The previous prime is 71918039. The next prime is 71918053. The reversal of 71918042 is 24081917.

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

It is a super-2 number, since 2×71918042² = 10344409530227528, which contains 22 as substring.

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, 2568488 + ... + 2568515.

It is an arithmetic number, because the mean of its divisors is an integer number (15411012).

Almost surely, 2^71918042 is an apocalyptic number.

71918042 is a deficient number, since it is larger than the sum of its proper divisors (51370054).

71918042 is a wasteful number, since it uses less digits than its factorization.

71918042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137012.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 71918042 is about 8480.4505776521. The cubic root of 71918042 is about 415.8588532800.

Adding to 71918042 its reverse (24081917), we get a palindrome (95999959).

The spelling of 71918042 in words is "seventy-one million, nine hundred eighteen thousand, forty-two".