71138419 has 8 divisors (see below), whose sum is σ = 77676912. Its totient is φ = 64611840.

The previous prime is 71138407. The next prime is 71138423. The reversal of 71138419 is 91483117.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71138419 is a prime.

It is a super-2 number, since 2×71138419² = 10121349315639122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71138219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13507 + ... + 18019.

It is an arithmetic number, because the mean of its divisors is an integer number (9709614).

Almost surely, 2^71138419 is an apocalyptic number.

71138419 is a deficient number, since it is larger than the sum of its proper divisors (6538493).

71138419 is a wasteful number, since it uses less digits than its factorization.

71138419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957.

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

The square root of 71138419 is about 8434.3594303302. The cubic root of 71138419 is about 414.3506931485.

The spelling of 71138419 in words is "seventy-one million, one hundred thirty-eight thousand, four hundred nineteen".