1242133433 has 2 divisors, whose sum is σ = 1242133434. Its totient is φ = 1242133432.

The previous prime is 1242133421. The next prime is 1242133457. The reversal of 1242133433 is 3343312421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129497664 + 112635769 = 33608^2 + 10613^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242133433 - 2⁶ = 1242133369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1242133933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621066716 + 621066717.

It is an arithmetic number, because the mean of its divisors is an integer number (621066717).

Almost surely, 2^1242133433 is an apocalyptic number.

It is an amenable number.

1242133433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242133433 is an equidigital number, since it uses as much as digits as its factorization.

1242133433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 26.

The square root of 1242133433 is about 35243.9134177804. The cubic root of 1242133433 is about 1074.9528540348.

Adding to 1242133433 its reverse (3343312421), we get a palindrome (4585445854).

It can be divided in two parts, 12421 and 33433, that added together give a palindrome (45854).

The spelling of 1242133433 in words is "one billion, two hundred forty-two million, one hundred thirty-three thousand, four hundred thirty-three".