47042445 has 8 divisors (see below), whose sum is σ = 75267936. Its totient is φ = 25089296.

The previous prime is 47042377. The next prime is 47042447. The reversal of 47042445 is 54424074.

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

It is a cyclic number.

It is not a de Polignac number, because 47042445 - 2⁹ = 47041933 is a prime.

It is a Curzon number.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47042447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568067 + ... + 1568096.

It is an arithmetic number, because the mean of its divisors is an integer number (9408492).

Almost surely, 2^47042445 is an apocalyptic number.

It is an amenable number.

47042445 is a deficient number, since it is larger than the sum of its proper divisors (28225491).

47042445 is a wasteful number, since it uses less digits than its factorization.

47042445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136171.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 47042445 is about 6858.7495215965. The cubic root of 47042445 is about 360.9912112306.

The spelling of 47042445 in words is "forty-seven million, forty-two thousand, four hundred forty-five".