1220142044 has 96 divisors (see below), whose sum is σ = 2482099200. Its totient is φ = 519816960.

The previous prime is 1220142031. The next prime is 1220142059. The reversal of 1220142044 is 4402410221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6816347 + ... + 6816525.

It is an arithmetic number, because the mean of its divisors is an integer number (25855200).

Almost surely, 2^1220142044 is an apocalyptic number.

It is an amenable number.

1220142044 is an abundant number, since it is smaller than the sum of its proper divisors (1261957156).

1220142044 is a wasteful number, since it uses less digits than its factorization.

1220142044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1220142044 is about 34930.5316879088. The cubic root of 1220142044 is about 1068.5711980032.

Adding to 1220142044 its reverse (4402410221), we get a palindrome (5622552265).

It can be divided in two parts, 12201 and 42044, that added together give a palindrome (54245).

The spelling of 1220142044 in words is "one billion, two hundred twenty million, one hundred forty-two thousand, forty-four".