71942919 has 16 divisors (see below), whose sum is σ = 100991232. Its totient is φ = 45465728.

The previous prime is 71942903. The next prime is 71942921. The reversal of 71942919 is 91924917.

It is a cyclic number.

It is not a de Polignac number, because 71942919 - 2⁴ = 71942903 is a prime.

It is a super-2 number, since 2×71942919² = 10351567188481122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71944919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (6311952).

Almost surely, 2^71942919 is an apocalyptic number.

71942919 is a deficient number, since it is larger than the sum of its proper divisors (29048313).

71942919 is a wasteful number, since it uses less digits than its factorization.

71942919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9366.

The product of its digits is 40824, while the sum is 42.

The square root of 71942919 is about 8481.9171771481. The cubic root of 71942919 is about 415.9067973368.

The spelling of 71942919 in words is "seventy-one million, nine hundred forty-two thousand, nine hundred nineteen".