71042481 has 8 divisors (see below), whose sum is σ = 105248160. Its totient is φ = 47361636.

The previous prime is 71042471. The next prime is 71042519. The reversal of 71042481 is 18424017.

It is not a de Polignac number, because 71042481 - 2⁵ = 71042449 is a prime.

It is a super-2 number, since 2×71042481² = 10094068213270722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2631203 = 71042481 / (7 + 1 + 0 + 4 + 2 + 4 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (71042471) 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 7 ways as a sum of consecutive naturals, for example, 1315575 + ... + 1315628.

It is an arithmetic number, because the mean of its divisors is an integer number (13156020).

Almost surely, 2^71042481 is an apocalyptic number.

It is an amenable number.

71042481 is a deficient number, since it is larger than the sum of its proper divisors (34205679).

71042481 is a wasteful number, since it uses less digits than its factorization.

71042481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631212 (or 2631206 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 71042481 is about 8428.6701798089. The cubic root of 71042481 is about 414.1643434904.

Adding to 71042481 its reverse (18424017), we get a palindrome (89466498).

The spelling of 71042481 in words is "seventy-one million, forty-two thousand, four hundred eighty-one".