71842005 has 16 divisors (see below), whose sum is σ = 127719360. Its totient is φ = 38315664.

The previous prime is 71841971. The next prime is 71842031. The reversal of 71842005 is 50024817.

It is not a de Polignac number, because 71842005 - 2⁶ = 71841941 is a prime.

It is a super-2 number, since 2×71842005² = 10322547364840050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 71842005.

It is a congruent number.

It is an unprimeable number.

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, 265947 + ... + 266216.

It is an arithmetic number, because the mean of its divisors is an integer number (7982460).

Almost surely, 2^71842005 is an apocalyptic number.

It is an amenable number.

71842005 is a deficient number, since it is larger than the sum of its proper divisors (55877355).

71842005 is a wasteful number, since it uses less digits than its factorization.

71842005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532177 (or 532171 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 71842005 is about 8475.9663165919. The cubic root of 71842005 is about 415.7122428274.

The spelling of 71842005 in words is "seventy-one million, eight hundred forty-two thousand, five".