1220232042 has 24 divisors (see below), whose sum is σ = 2653189344. Its totient is φ = 405305064.

The previous prime is 1220232017. The next prime is 1220232047. The reversal of 1220232042 is 2402320221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1220232047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114678 + ... + 124865.

It is an arithmetic number, because the mean of its divisors is an integer number (110549556).

Almost surely, 2^1220232042 is an apocalyptic number.

1220232042 is an abundant number, since it is smaller than the sum of its proper divisors (1432957302).

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

1220232042 is a wasteful number, since it uses less digits than its factorization.

1220232042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239834 (or 239831 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1220232042 is about 34931.8199067841. The cubic root of 1220232042 is about 1068.5974700554.

Adding to 1220232042 its reverse (2402320221), we get a palindrome (3622552263).

It can be divided in two parts, 12202 and 32042, that added together give a palindrome (44244).

The spelling of 1220232042 in words is "one billion, two hundred twenty million, two hundred thirty-two thousand, forty-two".