1442223220 has 24 divisors (see below), whose sum is σ = 3206826504. Its totient is φ = 542954496.

The previous prime is 1442223217. The next prime is 1442223281. The reversal of 1442223220 is 223222441.

It can be written as a sum of positive squares in 4 ways, for example, as 149964516 + 1292258704 = 12246^2 + 35948^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1442223191 and 1442223200.

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 7 ways as a sum of consecutive naturals, for example, 2120577 + ... + 2121256.

It is an arithmetic number, because the mean of its divisors is an integer number (133617771).

Almost surely, 2^1442223220 is an apocalyptic number.

1442223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442223220 is an abundant number, since it is smaller than the sum of its proper divisors (1764603284).

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

1442223220 is a wasteful number, since it uses less digits than its factorization.

1442223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241859 (or 4241857 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1442223220 is about 37976.6141197448. The cubic root of 1442223220 is about 1129.8240830908.

Adding to 1442223220 its reverse (223222441), we get a palindrome (1665445661).

The spelling of 1442223220 in words is "one billion, four hundred forty-two million, two hundred twenty-three thousand, two hundred twenty".