1320152420 has 12 divisors (see below), whose sum is σ = 2772320124. Its totient is φ = 528060960.

The previous prime is 1320152419. The next prime is 1320152429. The reversal of 1320152420 is 242510231.

It can be written as a sum of positive squares in 2 ways, for example, as 559606336 + 760546084 = 23656^2 + 27578^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 66007621 = 1320152420 / (1 + 3 + 2 + 0 + 1 + 5 + 2 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1320152392 and 1320152401.

It is not an unprimeable number, because it can be changed into a prime (1320152429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 33003791 + ... + 33003830.

It is an arithmetic number, because the mean of its divisors is an integer number (231026677).

Almost surely, 2^1320152420 is an apocalyptic number.

1320152420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320152420 is an abundant number, since it is smaller than the sum of its proper divisors (1452167704).

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

1320152420 is a wasteful number, since it uses less digits than its factorization.

1320152420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66007630 (or 66007628 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1320152420 is about 36333.9017998343. The cubic root of 1320152420 is about 1097.0035307915.

Adding to 1320152420 its reverse (242510231), we get a palindrome (1562662651).

The spelling of 1320152420 in words is "one billion, three hundred twenty million, one hundred fifty-two thousand, four hundred twenty".