1423220244420 has 48 divisors (see below), whose sum is σ = 4291556431680. Its totient is φ = 350331136896.

The previous prime is 1423220244373. The next prime is 1423220244451. The reversal of 1423220244420 is 244420223241.

It is a happy number.

It is a super-2 number, since 2×1423220244420² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912319890 + ... + 912321449.

It is an arithmetic number, because the mean of its divisors is an integer number (89407425660).

Almost surely, 2^{1423220244420} is an apocalyptic number.

1423220244420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423220244420 is an abundant number, since it is smaller than the sum of its proper divisors (2868336187260).

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

1423220244420 is a wasteful number, since it uses less digits than its factorization.

1423220244420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824641364 (or 1824641362 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 1423220244420 its reverse (244420223241), we get a palindrome (1667640467661).

The spelling of 1423220244420 in words is "one trillion, four hundred twenty-three billion, two hundred twenty million, two hundred forty-four thousand, four hundred twenty".