47122 has 4 divisors (see below), whose sum is σ = 70686. Its totient is φ = 23560.

The previous prime is 47119. The next prime is 47123. The reversal of 47122 is 22174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22174 = 2 ⋅11087.

It can be written as a sum of positive squares in only one way, i.e., 44521 + 2601 = 211^2 + 51^2 .

It is a junction number, because it is equal to *n*+sod(*n*) for *n* = 47096 and 47105.

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 as a sum of consecutive naturals, namely, 11779 + ... + 11782.

2^{47122} is an apocalyptic number.

47122 is a deficient number, since it is larger than the sum of its proper divisors (23564).

47122 is a wasteful number, since it uses less digits than its factorization.

47122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23563.

The product of its digits is 112, while the sum is 16.

The square root of 47122 is about 217.0760235494. The cubic root of 47122 is about 36.1194591263.

Adding to 47122 its reverse (22174), we get a palindrome (69296).

It can be divided in two parts, 47 and 122, that added together give a square (169 = 13^{2}).

The spelling of 47122 in words is "forty-seven thousand, one hundred twenty-two", and thus it is an iban number.

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