1355123320 has 64 divisors (see below), whose sum is σ = 3229488000. Its totient is φ = 510323328.

The previous prime is 1355123293. The next prime is 1355123327. The reversal of 1355123320 is 233215531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355123327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118411 + ... + 129349.

It is an arithmetic number, because the mean of its divisors is an integer number (50460750).

Almost surely, 2^1355123320 is an apocalyptic number.

1355123320 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 1355123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614744000).

1355123320 is an abundant number, since it is smaller than the sum of its proper divisors (1874364680).

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

1355123320 is a wasteful number, since it uses less digits than its factorization.

1355123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132 (or 11128 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1355123320 is about 36811.9996740193. Note that the first 3 decimals coincide. The cubic root of 1355123320 is about 1106.6057937356.

Adding to 1355123320 its reverse (233215531), we get a palindrome (1588338851).

The spelling of 1355123320 in words is "one billion, three hundred fifty-five million, one hundred twenty-three thousand, three hundred twenty".