71426109 has 12 divisors (see below), whose sum is σ = 99557696. Its totient is φ = 45546072.

The previous prime is 71426099. The next prime is 71426119. The reversal of 71426109 is 90162417.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71426099) and next prime (71426119).

It is not a de Polignac number, because 71426109 - 2¹¹ = 71424061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71426119) 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 11 ways as a sum of consecutive naturals, for example, 20917 + ... + 24090.

Almost surely, 2^71426109 is an apocalyptic number.

It is an amenable number.

71426109 is a deficient number, since it is larger than the sum of its proper divisors (28131587).

71426109 is a wasteful number, since it uses less digits than its factorization.

71426109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45056 (or 45033 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 71426109 is about 8451.3968667907. The cubic root of 71426109 is about 414.9084987217.

The spelling of 71426109 in words is "seventy-one million, four hundred twenty-six thousand, one hundred nine".