71921422 has 8 divisors (see below), whose sum is σ = 113560200. Its totient is φ = 34068024.

The previous prime is 71921417. The next prime is 71921429. The reversal of 71921422 is 22412917.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71921429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946297 + ... + 946372.

It is an arithmetic number, because the mean of its divisors is an integer number (14195025).

Almost surely, 2^71921422 is an apocalyptic number.

71921422 is a deficient number, since it is larger than the sum of its proper divisors (41638778).

71921422 is a wasteful number, since it uses less digits than its factorization.

71921422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892690.

The product of its digits is 2016, while the sum is 28.

The square root of 71921422 is about 8480.6498571749. The cubic root of 71921422 is about 415.8653680147.

The spelling of 71921422 in words is "seventy-one million, nine hundred twenty-one thousand, four hundred twenty-two".