1320153420 has 24 divisors (see below), whose sum is σ = 3696429744. Its totient is φ = 352040896.

The previous prime is 1320153397. The next prime is 1320153433. The reversal of 1320153420 is 243510231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11001219 + ... + 11001338.

It is an arithmetic number, because the mean of its divisors is an integer number (154017906).

Almost surely, 2^1320153420 is an apocalyptic number.

1320153420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320153420 is an abundant number, since it is smaller than the sum of its proper divisors (2376276324).

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

1320153420 is a wasteful number, since it uses less digits than its factorization.

1320153420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22002569 (or 22002567 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1320153420 is about 36333.9155610842. The cubic root of 1320153420 is about 1097.0038077806.

Adding to 1320153420 its reverse (243510231), we get a palindrome (1563663651).

The spelling of 1320153420 in words is "one billion, three hundred twenty million, one hundred fifty-three thousand, four hundred twenty".