1203021320 has 64 divisors (see below), whose sum is σ = 2932744320. Its totient is φ = 442358784.

The previous prime is 1203021317. The next prime is 1203021329. The reversal of 1203021320 is 231203021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1203021295 and 1203021304.

It is not an unprimeable number, because it can be changed into a prime (1203021329) 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, 8669 + ... + 49811.

It is an arithmetic number, because the mean of its divisors is an integer number (45824130).

Almost surely, 2^1203021320 is an apocalyptic number.

1203021320 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 1203021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466372160).

1203021320 is an abundant number, since it is smaller than the sum of its proper divisors (1729723000).

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

1203021320 is a wasteful number, since it uses less digits than its factorization.

1203021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41214 (or 41210 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1203021320 is about 34684.5977344411. The cubic root of 1203021320 is about 1063.5496638522.

Adding to 1203021320 its reverse (231203021), we get a palindrome (1434224341).

The spelling of 1203021320 in words is "one billion, two hundred three million, twenty-one thousand, three hundred twenty".