71719842 has 32 divisors (see below), whose sum is σ = 154846080. Its totient is φ = 22077440.

The previous prime is 71719807. The next prime is 71719847. The reversal of 71719842 is 24891717.

It is a self number, because there is not a number n which added to its sum of digits gives 71719842.

It is not an unprimeable number, because it can be changed into a prime (71719847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4959 + ... + 12962.

It is an arithmetic number, because the mean of its divisors is an integer number (4838940).

Almost surely, 2^71719842 is an apocalyptic number.

71719842 is an abundant number, since it is smaller than the sum of its proper divisors (83126238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71719842 is a wasteful number, since it uses less digits than its factorization.

71719842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17978.

The product of its digits is 28224, while the sum is 39.

The square root of 71719842 is about 8468.7568154954. The cubic root of 71719842 is about 415.4764779367.

The spelling of 71719842 in words is "seventy-one million, seven hundred nineteen thousand, eight hundred forty-two".