1220323242 has 16 divisors (see below), whose sum is σ = 2445946272. Its totient is φ = 405891120.

The previous prime is 1220323231. The next prime is 1220323289. The reversal of 1220323242 is 2423230221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217828 + ... + 223359.

It is an arithmetic number, because the mean of its divisors is an integer number (152871642).

Almost surely, 2^1220323242 is an apocalyptic number.

1220323242 is an abundant number, since it is smaller than the sum of its proper divisors (1225623030).

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

1220323242 is a wasteful number, since it uses less digits than its factorization.

1220323242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441653.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1220323242 is about 34933.1252824593. The cubic root of 1220323242 is about 1068.6240916754.

Adding to 1220323242 its reverse (2423230221), we get a palindrome (3643553463).

The spelling of 1220323242 in words is "one billion, two hundred twenty million, three hundred twenty-three thousand, two hundred forty-two".