1144721424 has 160 divisors (see below), whose sum is σ = 3881180160. Its totient is φ = 281664000.

The previous prime is 1144721387. The next prime is 1144721449. The reversal of 1144721424 is 4241274411.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1144721391 and 1144721400.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62074 + ... + 78374.

It is an arithmetic number, because the mean of its divisors is an integer number (24257376).

Almost surely, 2^1144721424 is an apocalyptic number.

1144721424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144721424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940590080).

1144721424 is an abundant number, since it is smaller than the sum of its proper divisors (2736458736).

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

1144721424 is a wasteful number, since it uses less digits than its factorization.

1144721424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16349 (or 16343 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 1144721424 is about 33833.7320436277. The cubic root of 1144721424 is about 1046.0841061952.

Adding to 1144721424 its reverse (4241274411), we get a palindrome (5385995835).

The spelling of 1144721424 in words is "one billion, one hundred forty-four million, seven hundred twenty-one thousand, four hundred twenty-four".