1320023124420 has 576 divisors, whose sum is σ = 5135377648128. Its totient is φ = 246343680000.

The previous prime is 1320023124397. The next prime is 1320023124481. The reversal of 1320023124420 is 244213200231.

It is a happy number.

It is a super-2 number, since 2×1320023124420² (a number of 25 digits) contains 22 as substring.

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 191 ways as a sum of consecutive naturals, for example, 24417420 + ... + 24471420.

Almost surely, 2^{1320023124420} is an apocalyptic number.

1320023124420 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 1320023124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2567688824064).

1320023124420 is an abundant number, since it is smaller than the sum of its proper divisors (3815354523708).

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

1320023124420 is a wasteful number, since it uses less digits than its factorization.

1320023124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54092 (or 54079 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1320023124420 its reverse (244213200231), we get a palindrome (1564236324651).

The spelling of 1320023124420 in words is "one trillion, three hundred twenty billion, twenty-three million, one hundred twenty-four thousand, four hundred twenty".