71047642 has 16 divisors (see below), whose sum is σ = 107991072. Its totient is φ = 35053200.

The previous prime is 71047637. The next prime is 71047643. The reversal of 71047642 is 24674017.

It is not an unprimeable number, because it can be changed into a prime (71047643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 110173 + ... + 110815.

It is an arithmetic number, because the mean of its divisors is an integer number (6749442).

Almost surely, 2^71047642 is an apocalyptic number.

71047642 is a deficient number, since it is larger than the sum of its proper divisors (36943430).

71047642 is a wasteful number, since it uses less digits than its factorization.

71047642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293.

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

The square root of 71047642 is about 8428.9763316787. The cubic root of 71047642 is about 414.1743724683.

The spelling of 71047642 in words is "seventy-one million, forty-seven thousand, six hundred forty-two".