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3442 = 21721

3442 has 4 divisors (see below), whose sum is σ = 5166. Its totient is φ = 1720.

The previous prime is 3433. The next prime is 3449. The reversal of 3442 is 2443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443 = 7349.

It can be written as a sum of positive squares in only one way, i.e., 2601 + 841 = 51^2 + 29^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (3449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859 + ... + 862.

3442 is a deficient number, since it is larger than the sum of its proper divisors (1724).

3442 is a wasteful number, since it uses less digits than its factorization.

3442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723.

The product of its digits is 96, while the sum is 13.

The square root of 3442 is about 58.6685605755. The cubic root of 3442 is about 15.0986095821.

Adding to 3442 its reverse (2443), we get a palindrome (5885).

Subtracting from 3442 its reverse (2443), we obtain a palindrome (999).

It can be divided in two parts, 3 and 442, that multiplied together give a triangular number (1326 = T51).

The spelling of 3442 in words is "three thousand, four hundred forty-two", and thus it is an iban number.

Divisors: 1 2 1721 3442