1220442042 has 16 divisors (see below), whose sum is σ = 2444847552. Its totient is φ = 406153440.

The previous prime is 1220442017. The next prime is 1220442071. The reversal of 1220442042 is 2402440221.

It is a super-2 number, since 2×1220442042² = 2978957555762259528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161134 + ... + 168537.

It is an arithmetic number, because the mean of its divisors is an integer number (152802972).

Almost surely, 2^1220442042 is an apocalyptic number.

1220442042 is an abundant number, since it is smaller than the sum of its proper divisors (1224405510).

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

1220442042 is a wasteful number, since it uses less digits than its factorization.

1220442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330293.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1220442042 is about 34934.8256328839. The cubic root of 1220442042 is about 1068.6587678493.

Adding to 1220442042 its reverse (2402440221), we get a palindrome (3622882263).

The spelling of 1220442042 in words is "one billion, two hundred twenty million, four hundred forty-two thousand, forty-two".