71042236 has 24 divisors (see below), whose sum is σ = 125813520. Its totient is φ = 35098752.

The previous prime is 71042227. The next prime is 71042243. The reversal of 71042236 is 63224017.

It is a self number, because there is not a number n which added to its sum of digits gives 71042236.

It is a congruent number.

It is an unprimeable number.

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, 223950 + ... + 224266.

It is an arithmetic number, because the mean of its divisors is an integer number (5242230).

Almost surely, 2^71042236 is an apocalyptic number.

It is an amenable number.

71042236 is a deficient number, since it is larger than the sum of its proper divisors (54771284).

71042236 is a wasteful number, since it uses less digits than its factorization.

71042236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 71042236 is about 8428.6556460684. The cubic root of 71042236 is about 414.1638673885.

The spelling of 71042236 in words is "seventy-one million, forty-two thousand, two hundred thirty-six".