1101203420 has 48 divisors (see below), whose sum is σ = 2419417728. Its totient is φ = 420579840.

The previous prime is 1101203401. The next prime is 1101203431. The reversal of 1101203420 is 243021011.

It is a junction number, because it is equal to n+sod(n) for n = 1101203395 and 1101203404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24254 + ... + 52826.

It is an arithmetic number, because the mean of its divisors is an integer number (50404536).

Almost surely, 2^1101203420 is an apocalyptic number.

1101203420 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 1101203420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209708864).

1101203420 is an abundant number, since it is smaller than the sum of its proper divisors (1318214308).

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

1101203420 is a wasteful number, since it uses less digits than its factorization.

1101203420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28670 (or 28668 counting only the distinct ones).

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

The square root of 1101203420 is about 33184.3851833961. The cubic root of 1101203420 is about 1032.6564226657.

Adding to 1101203420 its reverse (243021011), we get a palindrome (1344224431).

The spelling of 1101203420 in words is "one billion, one hundred one million, two hundred three thousand, four hundred twenty".