47042071 has 4 divisors (see below), whose sum is σ = 47063952. Its totient is φ = 47020192.

The previous prime is 47042053. The next prime is 47042113. The reversal of 47042071 is 17024074.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47042071 - 2¹⁷ = 46910999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47042971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7315 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (11765988).

Almost surely, 2^47042071 is an apocalyptic number.

47042071 is a deficient number, since it is larger than the sum of its proper divisors (21881).

47042071 is a wasteful number, since it uses less digits than its factorization.

47042071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21880.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 47042071 is about 6858.7222570972. The cubic root of 47042071 is about 360.9902545692.

The spelling of 47042071 in words is "forty-seven million, forty-two thousand, seventy-one".