1244023420243 has 2 divisors, whose sum is σ = 1244023420244. Its totient is φ = 1244023420242.

The previous prime is 1244023420231. The next prime is 1244023420273. The reversal of 1244023420243 is 3420243204421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244023420243 is a prime.

It is a super-2 number, since 2×1244023420243² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1244023420273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622011710121 + 622011710122.

It is an arithmetic number, because the mean of its divisors is an integer number (622011710122).

Almost surely, 2^{1244023420243} is an apocalyptic number.

1244023420243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244023420243 is an equidigital number, since it uses as much as digits as its factorization.

1244023420243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 1244023420243 its reverse (3420243204421), we get a palindrome (4664266624664).

The spelling of 1244023420243 in words is "one trillion, two hundred forty-four billion, twenty-three million, four hundred twenty thousand, two hundred forty-three".