1422005640 has 128 divisors (see below), whose sum is σ = 4699468800. Its totient is φ = 341349120.

The previous prime is 1422005639. The next prime is 1422005687. The reversal of 1422005640 is 465002241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1422005640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130731 + ... + 141189.

It is an arithmetic number, because the mean of its divisors is an integer number (36714600).

Almost surely, 2^1422005640 is an apocalyptic number.

1422005640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422005640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2349734400).

1422005640 is an abundant number, since it is smaller than the sum of its proper divisors (3277463160).

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

1422005640 is a wasteful number, since it uses less digits than its factorization.

1422005640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10587 (or 10583 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1422005640 is about 37709.4900522402. The cubic root of 1422005640 is about 1124.5197990082.

Adding to 1422005640 its reverse (465002241), we get a palindrome (1887007881).

The spelling of 1422005640 in words is "one billion, four hundred twenty-two million, five thousand, six hundred forty".