1144403021 has 8 divisors (see below), whose sum is σ = 1154940384. Its totient is φ = 1133914320.

The previous prime is 1144402981. The next prime is 1144403053. The reversal of 1144403021 is 1203044411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144403021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1144402984 and 1144403002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144403921) 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 7 ways as a sum of consecutive naturals, for example, 35951 + ... + 59843.

It is an arithmetic number, because the mean of its divisors is an integer number (144367548).

Almost surely, 2^1144403021 is an apocalyptic number.

It is an amenable number.

1144403021 is a deficient number, since it is larger than the sum of its proper divisors (10537363).

1144403021 is a wasteful number, since it uses less digits than its factorization.

1144403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24331.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1144403021 is about 33829.0263087781. The cubic root of 1144403021 is about 1045.9871081550.

Adding to 1144403021 its reverse (1203044411), we get a palindrome (2347447432).

The spelling of 1144403021 in words is "one billion, one hundred forty-four million, four hundred three thousand, twenty-one".