243122 has 16 divisors (see below), whose sum is σ = 408672. Its totient is φ = 107520.

The previous prime is 243121. The next prime is 243137. The reversal of 243122 is 221342.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 243097 and 243106.

It is not an unprimeable number, because it can be changed into a prime (243121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818 + ... + 1074.

It is an arithmetic number, because the mean of its divisors is an integer number (25542).

2²⁴³¹²² is an apocalyptic number.

243122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243122 is a deficient number, since it is larger than the sum of its proper divisors (165550).

243122 is a wasteful number, since it uses less digits than its factorization.

243122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its digits is 96, while the sum is 14.

The square root of 243122 is about 493.0740309528. The cubic root of 243122 is about 62.4129561635.

Adding to 243122 its reverse (221342), we get a palindrome (464464).

It can be divided in two parts, 243 and 122, that multiplied together give a triangular number (29646 = T₂₄₃).

The spelling of 243122 in words is "two hundred forty-three thousand, one hundred twenty-two", and thus it is an iban number.