71241869 has 2 divisors, whose sum is σ = 71241870. Its totient is φ = 71241868.

The previous prime is 71241803. The next prime is 71241871. The reversal of 71241869 is 96814217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71199844 + 42025 = 8438^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 71241869 - 2¹² = 71237773 is a prime.

It is a super-2 number, since 2×71241869² = 10150807797226322, which contains 22 as substring.

Together with 71241871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71441869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35620934 + 35620935.

It is an arithmetic number, because the mean of its divisors is an integer number (35620935).

Almost surely, 2^71241869 is an apocalyptic number.

It is an amenable number.

71241869 is a deficient number, since it is larger than the sum of its proper divisors (1).

71241869 is an equidigital number, since it uses as much as digits as its factorization.

71241869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 71241869 is about 8440.4898554527. The cubic root of 71241869 is about 414.5514464526.

The spelling of 71241869 in words is "seventy-one million, two hundred forty-one thousand, eight hundred sixty-nine".