1320063420 has 96 divisors (see below), whose sum is σ = 4011194880. Its totient is φ = 322433280.

The previous prime is 1320063389. The next prime is 1320063461. The reversal of 1320063420 is 243600231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 95721 + ... + 108639.

It is an arithmetic number, because the mean of its divisors is an integer number (41783280).

Almost surely, 2^1320063420 is an apocalyptic number.

1320063420 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 1320063420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005597440).

1320063420 is an abundant number, since it is smaller than the sum of its proper divisors (2691131460).

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

1320063420 is a wasteful number, since it uses less digits than its factorization.

1320063420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13075 (or 13073 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1320063420 is about 36332.6770277116. The cubic root of 1320063420 is about 1096.9788782068.

Adding to 1320063420 its reverse (243600231), we get a palindrome (1563663651).

The spelling of 1320063420 in words is "one billion, three hundred twenty million, sixty-three thousand, four hundred twenty".