1442642220 has 36 divisors (see below), whose sum is σ = 4376015280. Its totient is φ = 384704544.

The previous prime is 1442642189. The next prime is 1442642233. The reversal of 1442642220 is 222462441.

1442642220 is a `hidden beast` number, since 14 + 4 + 2 + 642 + 2 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 4007160 + ... + 4007519.

It is an arithmetic number, because the mean of its divisors is an integer number (121555980).

Almost surely, 2^1442642220 is an apocalyptic number.

1442642220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442642220 is an abundant number, since it is smaller than the sum of its proper divisors (2933373060).

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

1442642220 is a wasteful number, since it uses less digits than its factorization.

1442642220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8014694 (or 8014689 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1442642220 is about 37982.1302720108. The cubic root of 1442642220 is about 1129.9334860476.

The spelling of 1442642220 in words is "one billion, four hundred forty-two million, six hundred forty-two thousand, two hundred twenty".