1242133369 has 2 divisors, whose sum is σ = 1242133370. Its totient is φ = 1242133368.

The previous prime is 1242133367. The next prime is 1242133393. The reversal of 1242133369 is 9633312421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1036067344 + 206066025 = 32188^2 + 14355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242133369 - 2¹ = 1242133367 is a prime.

It is a super-2 number, since 2×1242133369² = 3085790612766580322, which contains 22 as substring.

Together with 1242133367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1242133363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621066684 + 621066685.

It is an arithmetic number, because the mean of its divisors is an integer number (621066685).

Almost surely, 2^1242133369 is an apocalyptic number.

It is an amenable number.

1242133369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242133369 is an equidigital number, since it uses as much as digits as its factorization.

1242133369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 1242133369 is about 35243.9125098222. The cubic root of 1242133369 is about 1074.9528355727.

The spelling of 1242133369 in words is "one billion, two hundred forty-two million, one hundred thirty-three thousand, three hundred sixty-nine".