47121 has 8 divisors (see below), whose sum is σ = 63840. Its totient is φ = 30912.

The previous prime is 47119. The next prime is 47123. The reversal of 47121 is 12174.

It is an interprime number because it is at equal distance from previous prime (47119) and next prime (47123).

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

It is not a de Polignac number, because 47121 - 2¹ = 47119 is a prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 47121.

It is not an unprimeable number, because it can be changed into a prime (47123) 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, 270 + ... + 408.

It is an arithmetic number, because the mean of its divisors is an integer number (7980).

2⁴⁷¹²¹ is an apocalyptic number.

It is an amenable number.

47121 is a deficient number, since it is larger than the sum of its proper divisors (16719).

47121 is a wasteful number, since it uses less digits than its factorization.

47121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its digits is 56, while the sum is 15.

The square root of 47121 is about 217.0737201966. The cubic root of 47121 is about 36.1192036214.

Adding to 47121 its reverse (12174), we get a palindrome (59295).

The spelling of 47121 in words is "forty-seven thousand, one hundred twenty-one", and thus it is an iban number.