1144021376 has 16 divisors (see below), whose sum is σ = 2279105340. Its totient is φ = 572010624.

The previous prime is 1144021343. The next prime is 1144021393. The reversal of 1144021376 is 6731204411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4468706 + ... + 4468961.

Almost surely, 2^1144021376 is an apocalyptic number.

1144021376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1144021376 is a deficient number, since it is larger than the sum of its proper divisors (1135083964).

1144021376 is an frugal number, since it uses more digits than its factorization.

1144021376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937681 (or 8937669 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1144021376 is about 33823.3850464438. The cubic root of 1144021376 is about 1045.8708204119.

Adding to 1144021376 its reverse (6731204411), we get a palindrome (7875225787).

The spelling of 1144021376 in words is "one billion, one hundred forty-four million, twenty-one thousand, three hundred seventy-six".