71706442 has 8 divisors (see below), whose sum is σ = 113886756. Its totient is φ = 33744192.

The previous prime is 71706389. The next prime is 71706457. The reversal of 71706442 is 24460717.

It can be written as a sum of positive squares in 2 ways, for example, as 64625521 + 7080921 = 8039^2 + 2661^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 1054473 + ... + 1054540.

Almost surely, 2^71706442 is an apocalyptic number.

71706442 is a deficient number, since it is larger than the sum of its proper divisors (42180314).

71706442 is a wasteful number, since it uses less digits than its factorization.

71706442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109032.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 71706442 is about 8467.9656352633. The cubic root of 71706442 is about 415.4506007112.

The spelling of 71706442 in words is "seventy-one million, seven hundred six thousand, four hundred forty-two".