12220042 has 16 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 5695168.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220042 is 24002221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959 + ... + 5317.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^12220042 is an apocalyptic number.

12220042 is a deficient number, since it is larger than the sum of its proper divisors (7375478).

12220042 is a wasteful number, since it uses less digits than its factorization.

12220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12220042 is about 3495.7176659450. The cubic root of 12220042 is about 230.3337435874. Note that the first 3 decimals are identical.

Adding to 12220042 its reverse (24002221), we get a palindrome (36222263).

It can be divided in two parts, 122 and 20042, that added together give a square (20164 = 142²).

The spelling of 12220042 in words is "twelve million, two hundred twenty thousand, forty-two".