1442881220 has 48 divisors (see below), whose sum is σ = 3311437248. Its totient is φ = 523743360.

The previous prime is 1442881217. The next prime is 1442881249. The reversal of 1442881220 is 221882441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123554 + ... + 134726.

It is an arithmetic number, because the mean of its divisors is an integer number (68988276).

Almost surely, 2^1442881220 is an apocalyptic number.

1442881220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442881220 is an abundant number, since it is smaller than the sum of its proper divisors (1868556028).

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

1442881220 is a wasteful number, since it uses less digits than its factorization.

1442881220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11780 (or 11778 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 1442881220 is about 37985.2763580838. The cubic root of 1442881220 is about 1129.9958806334.

The spelling of 1442881220 in words is "one billion, four hundred forty-two million, eight hundred eighty-one thousand, two hundred twenty".