1420443066 has 48 divisors (see below), whose sum is σ = 3310614720. Its totient is φ = 405115200.

The previous prime is 1420443023. The next prime is 1420443067. The reversal of 1420443066 is 6603440241.

It is not an unprimeable number, because it can be changed into a prime (1420443067) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 172675 + ... + 180713.

It is an arithmetic number, because the mean of its divisors is an integer number (68971140).

Almost surely, 2^1420443066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420443066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1655307360).

1420443066 is an abundant number, since it is smaller than the sum of its proper divisors (1890171654).

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

1420443066 is a wasteful number, since it uses less digits than its factorization.

1420443066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659 (or 8652 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1420443066 is about 37688.7657797387. The cubic root of 1420443066 is about 1124.1077543678.

The spelling of 1420443066 in words is "one billion, four hundred twenty million, four hundred forty-three thousand, sixty-six".