71438119 has 4 divisors (see below), whose sum is σ = 75198040. Its totient is φ = 67678200.

The previous prime is 71438071. The next prime is 71438149. The reversal of 71438119 is 91183417.

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

It is a cyclic number.

It is not a de Polignac number, because 71438119 - 2¹⁵ = 71405351 is a prime.

It is a super-2 number, since 2×71438119² = 10206809692516322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71438149) 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 3 ways as a sum of consecutive naturals, for example, 1879932 + ... + 1879969.

It is an arithmetic number, because the mean of its divisors is an integer number (18799510).

Almost surely, 2^71438119 is an apocalyptic number.

71438119 is a deficient number, since it is larger than the sum of its proper divisors (3759921).

71438119 is a wasteful number, since it uses less digits than its factorization.

71438119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759920.

The product of its digits is 6048, while the sum is 34.

The square root of 71438119 is about 8452.1073703544. The cubic root of 71438119 is about 414.9317524584.

The spelling of 71438119 in words is "seventy-one million, four hundred thirty-eight thousand, one hundred nineteen".