71042471 has 2 divisors, whose sum is σ = 71042472. Its totient is φ = 71042470.

The previous prime is 71042459. The next prime is 71042519. The reversal of 71042471 is 17424017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71042471 - 2¹⁰ = 71041447 is a prime.

It is a super-3 number, since 3×71042471³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71042471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71042171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35521235 + 35521236.

It is an arithmetic number, because the mean of its divisors is an integer number (35521236).

Almost surely, 2^71042471 is an apocalyptic number.

71042471 is a deficient number, since it is larger than the sum of its proper divisors (1).

71042471 is an equidigital number, since it uses as much as digits as its factorization.

71042471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 71042471 is about 8428.6695865955. The cubic root of 71042471 is about 414.1643240577.

Adding to 71042471 its reverse (17424017), we get a palindrome (88466488).

The spelling of 71042471 in words is "seventy-one million, forty-two thousand, four hundred seventy-one".