1200013144 has 48 divisors (see below), whose sum is σ = 2482194960. Its totient is φ = 543470400.

The previous prime is 1200013079. The next prime is 1200013163. The reversal of 1200013144 is 4413100021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281509 + ... + 285739.

It is an arithmetic number, because the mean of its divisors is an integer number (51712395).

Almost surely, 2^1200013144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200013144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241097480).

1200013144 is an abundant number, since it is smaller than the sum of its proper divisors (1282181816).

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

1200013144 is a wasteful number, since it uses less digits than its factorization.

1200013144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552 (or 4537 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1200013144 is about 34641.2058681565. The cubic root of 1200013144 is about 1062.6624490530.

Adding to 1200013144 its reverse (4413100021), we get a palindrome (5613113165).

The spelling of 1200013144 in words is "one billion, two hundred million, thirteen thousand, one hundred forty-four".