1244242345 has 8 divisors (see below), whose sum is σ = 1496639880. Its totient is φ = 993027840.

The previous prime is 1244242333. The next prime is 1244242403. The reversal of 1244242345 is 5432424421.

It can be written as a sum of positive squares in 4 ways, for example, as 11108889 + 1233133456 = 3333^2 + 35116^2 .

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

It is not a de Polignac number, because 1244242345 - 2¹⁹ = 1243718057 is a prime.

It is an unprimeable number.

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, 293440 + ... + 297649.

It is an arithmetic number, because the mean of its divisors is an integer number (187079985).

Almost surely, 2^1244242345 is an apocalyptic number.

It is an amenable number.

1244242345 is a deficient number, since it is larger than the sum of its proper divisors (252397535).

1244242345 is an equidigital number, since it uses as much as digits as its factorization.

1244242345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591515.

The product of its digits is 30720, while the sum is 31.

The square root of 1244242345 is about 35273.8195408436. The cubic root of 1244242345 is about 1075.5608668700.

Adding to 1244242345 its reverse (5432424421), we get a palindrome (6676666766).

The spelling of 1244242345 in words is "one billion, two hundred forty-four million, two hundred forty-two thousand, three hundred forty-five".