1200541144 has 64 divisors (see below), whose sum is σ = 2599833600. Its totient is φ = 513993600.

The previous prime is 1200541141. The next prime is 1200541169. The reversal of 1200541144 is 4411450021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200541141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 300649 + ... + 304615.

It is an arithmetic number, because the mean of its divisors is an integer number (40622400).

Almost surely, 2^1200541144 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 1200541144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299916800).

1200541144 is an abundant number, since it is smaller than the sum of its proper divisors (1399292456).

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

1200541144 is a wasteful number, since it uses less digits than its factorization.

1200541144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1200541144 is about 34648.8260118579. The cubic root of 1200541144 is about 1062.8182816520.

Adding to 1200541144 its reverse (4411450021), we get a palindrome (5611991165).

The spelling of 1200541144 in words is "one billion, two hundred million, five hundred forty-one thousand, one hundred forty-four".