71242636 has 12 divisors (see below), whose sum is σ = 125077680. Its totient is φ = 35506160.

The previous prime is 71242621. The next prime is 71242651. The reversal of 71242636 is 63624217.

It is an interprime number because it is at equal distance from previous prime (71242621) and next prime (71242651).

It is a junction number, because it is equal to n+sod(n) for n = 71242598 and 71242607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27391 + ... + 29878.

It is an arithmetic number, because the mean of its divisors is an integer number (10423140).

Almost surely, 2^71242636 is an apocalyptic number.

It is an amenable number.

71242636 is a deficient number, since it is larger than the sum of its proper divisors (53835044).

71242636 is a wasteful number, since it uses less digits than its factorization.

71242636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57584 (or 57582 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 71242636 is about 8440.5352910820. The cubic root of 71242636 is about 414.5529341537.

The spelling of 71242636 in words is "seventy-one million, two hundred forty-two thousand, six hundred thirty-six".