71104427 has 4 divisors (see below), whose sum is σ = 71319576. Its totient is φ = 70889280.

The previous prime is 71104393. The next prime is 71104457. The reversal of 71104427 is 72440117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71104427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71104396 and 71104405.

It is not an unprimeable number, because it can be changed into a prime (71104457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107078 + ... + 107739.

It is an arithmetic number, because the mean of its divisors is an integer number (17829894).

Almost surely, 2^71104427 is an apocalyptic number.

71104427 is a deficient number, since it is larger than the sum of its proper divisors (215149).

71104427 is a wasteful number, since it uses less digits than its factorization.

71104427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215148.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 71104427 is about 8432.3440987664. The cubic root of 71104427 is about 414.2846863742.

The spelling of 71104427 in words is "seventy-one million, one hundred four thousand, four hundred twenty-seven".