1200454144 has 40 divisors (see below), whose sum is σ = 2419906500. Its totient is φ = 594886656.

The previous prime is 1200454141. The next prime is 1200454147. The reversal of 1200454144 is 4414540021.

It is an interprime number because it is at equal distance from previous prime (1200454141) and next prime (1200454147).

It can be written as a sum of positive squares in 2 ways, for example, as 777740544 + 422713600 = 27888^2 + 20560^2 .

It is not an unprimeable number, because it can be changed into a prime (1200454141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47482 + ... + 68230.

Almost surely, 2^1200454144 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 1200454144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209953250).

1200454144 is an abundant number, since it is smaller than the sum of its proper divisors (1219452356).

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

1200454144 is an equidigital number, since it uses as much as digits as its factorization.

1200454144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20880 (or 20864 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1200454144 is about 34647.5705353204. The cubic root of 1200454144 is about 1062.7926078341.

Adding to 1200454144 its reverse (4414540021), we get a palindrome (5614994165).

The spelling of 1200454144 in words is "one billion, two hundred million, four hundred fifty-four thousand, one hundred forty-four".