1123942089539 has 2 divisors, whose sum is σ = 1123942089540. Its totient is φ = 1123942089538.

The previous prime is 1123942089527. The next prime is 1123942089631. The reversal of 1123942089539 is 9359802493211.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9359802493211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123942089539 - 2¹² = 1123942085443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123942389539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561971044769 + 561971044770.

It is an arithmetic number, because the mean of its divisors is an integer number (561971044770).

Almost surely, 2^{1123942089539} is an apocalyptic number.

1123942089539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123942089539 is an equidigital number, since it uses as much as digits as its factorization.

1123942089539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 1123942089539 in words is "one trillion, one hundred twenty-three billion, nine hundred forty-two million, eighty-nine thousand, five hundred thirty-nine".