1203133440 has 352 divisors, whose sum is σ = 4144438080. Its totient is φ = 297271296.

The previous prime is 1203133433. The next prime is 1203133457. The reversal of 1203133440 is 443313021.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16481244 + ... + 16481316.

Almost surely, 2^1203133440 is an apocalyptic number.

1203133440 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 1203133440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2072219040).

1203133440 is an abundant number, since it is smaller than the sum of its proper divisors (2941304640).

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

1203133440 is a wasteful number, since it uses less digits than its factorization.

1203133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1203133440 is about 34686.2139761606. The cubic root of 1203133440 is about 1063.5827033010.

Adding to 1203133440 its reverse (443313021), we get a palindrome (1646446461).

It can be divided in two parts, 120313 and 3440, that added together give a triangular number (123753 = T₄₉₇).

The spelling of 1203133440 in words is "one billion, two hundred three million, one hundred thirty-three thousand, four hundred forty".