1235242369 has 2 divisors, whose sum is σ = 1235242370. Its totient is φ = 1235242368.

The previous prime is 1235242343. The next prime is 1235242397. The reversal of 1235242369 is 9632425321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204992369 + 30250000 = 34713^2 + 5500^2 .

It is an emirp because it is prime and its reverse (9632425321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1235242369 - 2²⁷ = 1101024641 is a prime.

It is a super-2 number, since 2×1235242369² = 3051647420345464322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1235242339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617621184 + 617621185.

It is an arithmetic number, because the mean of its divisors is an integer number (617621185).

Almost surely, 2^1235242369 is an apocalyptic number.

It is an amenable number.

1235242369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235242369 is an equidigital number, since it uses as much as digits as its factorization.

1235242369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 1235242369 is about 35146.0149803644. The cubic root of 1235242369 is about 1072.9613047705.

The spelling of 1235242369 in words is "one billion, two hundred thirty-five million, two hundred forty-two thousand, three hundred sixty-nine".