1223321142 has 16 divisors (see below), whose sum is σ = 2446992432. Its totient is φ = 407715360.

The previous prime is 1223321131. The next prime is 1223321149. The reversal of 1223321142 is 2411233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223321149) 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, 60792 + ... + 78372.

It is an arithmetic number, because the mean of its divisors is an integer number (152937027).

Almost surely, 2^1223321142 is an apocalyptic number.

1223321142 is an abundant number, since it is smaller than the sum of its proper divisors (1223671290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223321142 is a wasteful number, since it uses less digits than its factorization.

1223321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29183.

The product of its digits is 576, while the sum is 21.

The square root of 1223321142 is about 34976.0080912616. The cubic root of 1223321142 is about 1069.4984524561.

Adding to 1223321142 its reverse (2411233221), we get a palindrome (3634554363).

The spelling of 1223321142 in words is "one billion, two hundred twenty-three million, three hundred twenty-one thousand, one hundred forty-two".