1144124321 has 4 divisors (see below), whose sum is σ = 1144801812. Its totient is φ = 1143446832.

The previous prime is 1144124291. The next prime is 1144124329. The reversal of 1144124321 is 1234214411.

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 745563025 + 398561296 = 27305^2 + 19964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144124321 - 2²² = 1139930017 is a prime.

It is a super-2 number, since 2×1144124321² = 2618040923807422082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144124329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336206 + ... + 339591.

It is an arithmetic number, because the mean of its divisors is an integer number (286200453).

Almost surely, 2^1144124321 is an apocalyptic number.

It is an amenable number.

1144124321 is a deficient number, since it is larger than the sum of its proper divisors (677491).

1144124321 is an equidigital number, since it uses as much as digits as its factorization.

1144124321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677490.

The product of its digits is 768, while the sum is 23.

The square root of 1144124321 is about 33824.9068143580. The cubic root of 1144124321 is about 1045.9021904382.

Adding to 1144124321 its reverse (1234214411), we get a palindrome (2378338732).

The spelling of 1144124321 in words is "one billion, one hundred forty-four million, one hundred twenty-four thousand, three hundred twenty-one".