1200203040 has 96 divisors (see below), whose sum is σ = 3882876480. Its totient is φ = 311399424.

The previous prime is 1200202981. The next prime is 1200203047. The reversal of 1200203040 is 403020021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1200203047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16030 + ... + 51549.

It is an arithmetic number, because the mean of its divisors is an integer number (40446630).

Almost surely, 2^1200203040 is an apocalyptic number.

1200203040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200203040 is an abundant number, since it is smaller than the sum of its proper divisors (2682673440).

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

1200203040 is a wasteful number, since it uses less digits than its factorization.

1200203040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67634 (or 67626 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1200203040 is about 34643.9466573888. The cubic root of 1200203040 is about 1062.7184997460.

Adding to 1200203040 its reverse (403020021), we get a palindrome (1603223061).

The spelling of 1200203040 in words is "one billion, two hundred million, two hundred three thousand, forty".