1200144040 has 32 divisors (see below), whose sum is σ = 2701323360. Its totient is φ = 479880000.

The previous prime is 1200143977. The next prime is 1200144047. The reversal of 1200144040 is 404410021.

It is not an unprimeable number, because it can be changed into a prime (1200144047) 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, 182815 + ... + 189265.

It is an arithmetic number, because the mean of its divisors is an integer number (84416355).

Almost surely, 2^1200144040 is an apocalyptic number.

1200144040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200144040 is an abundant number, since it is smaller than the sum of its proper divisors (1501179320).

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

1200144040 is a wasteful number, since it uses less digits than its factorization.

1200144040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113 (or 11109 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1200144040 is about 34643.0951273122. The cubic root of 1200144040 is about 1062.7010856316.

Adding to 1200144040 its reverse (404410021), we get a palindrome (1604554061).

The spelling of 1200144040 in words is "one billion, two hundred million, one hundred forty-four thousand, forty".