1144330421 has 4 divisors (see below), whose sum is σ = 1232355852. Its totient is φ = 1056304992.

The previous prime is 1144330403. The next prime is 1144330441. The reversal of 1144330421 is 1240334411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524868100 + 619462321 = 22910^2 + 24889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144330421 is a prime.

It is a super-2 number, since 2×1144330421² = 2618984224852074482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144330441) 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, 44012696 + ... + 44012721.

It is an arithmetic number, because the mean of its divisors is an integer number (308088963).

Almost surely, 2^1144330421 is an apocalyptic number.

It is an amenable number.

1144330421 is a deficient number, since it is larger than the sum of its proper divisors (88025431).

1144330421 is an equidigital number, since it uses as much as digits as its factorization.

1144330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88025430.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1144330421 is about 33827.9532487557. The cubic root of 1144330421 is about 1045.9649888292.

Adding to 1144330421 its reverse (1240334411), we get a palindrome (2384664832).

The spelling of 1144330421 in words is "one billion, one hundred forty-four million, three hundred thirty thousand, four hundred twenty-one".