71756242 has 8 divisors (see below), whose sum is σ = 108192636. Its totient is φ = 35692032.

The previous prime is 71756231. The next prime is 71756261. The reversal of 71756242 is 24265717.

It can be written as a sum of positive squares in 2 ways, for example, as 67223601 + 4532641 = 8199^2 + 2129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 71756198 and 71756207.

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, 92563 + ... + 93334.

Almost surely, 2^71756242 is an apocalyptic number.

71756242 is a deficient number, since it is larger than the sum of its proper divisors (36436394).

71756242 is a wasteful number, since it uses less digits than its factorization.

71756242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186092.

The product of its digits is 23520, while the sum is 34.

The square root of 71756242 is about 8470.9056186455. The cubic root of 71756242 is about 415.5467550296.

The spelling of 71756242 in words is "seventy-one million, seven hundred fifty-six thousand, two hundred forty-two".