1244242321 has 8 divisors (see below), whose sum is σ = 1422325184. Its totient is φ = 1066242960.

The previous prime is 1244242277. The next prime is 1244242333. The reversal of 1244242321 is 1232424421.

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

It is a cyclic number.

It is not a de Polignac number, because 1244242321 - 2¹⁵ = 1244209553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245242321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15226 + ... + 52156.

It is an arithmetic number, because the mean of its divisors is an integer number (177790648).

Almost surely, 2^1244242321 is an apocalyptic number.

It is an amenable number.

1244242321 is a deficient number, since it is larger than the sum of its proper divisors (178082863).

1244242321 is an equidigital number, since it uses as much as digits as its factorization.

1244242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41751.

The product of its digits is 3072, while the sum is 25.

The square root of 1244242321 is about 35273.8192006480. The cubic root of 1244242321 is about 1075.5608599546.

Adding to 1244242321 its reverse (1232424421), we get a palindrome (2476666742).

The spelling of 1244242321 in words is "one billion, two hundred forty-four million, two hundred forty-two thousand, three hundred twenty-one".