1100321420 has 24 divisors (see below), whose sum is σ = 2520736848. Its totient is φ = 400116800.

The previous prime is 1100321419. The next prime is 1100321423. The reversal of 1100321420 is 241230011.

It is a junction number, because it is equal to n+sod(n) for n = 1100321395 and 1100321404.

It is not an unprimeable number, because it can be changed into a prime (1100321423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500511 + ... + 2500950.

It is an arithmetic number, because the mean of its divisors is an integer number (105030702).

Almost surely, 2^1100321420 is an apocalyptic number.

1100321420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100321420 is an abundant number, since it is smaller than the sum of its proper divisors (1420415428).

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

1100321420 is a wasteful number, since it uses less digits than its factorization.

1100321420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001481 (or 5001479 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1100321420 is about 33171.0931384542. The cubic root of 1100321420 is about 1032.3806497482.

Adding to 1100321420 its reverse (241230011), we get a palindrome (1341551431).

It can be divided in two parts, 11003 and 21420, that added together give a palindrome (32423).

The spelling of 1100321420 in words is "one billion, one hundred million, three hundred twenty-one thousand, four hundred twenty".