1242430133 has 6 divisors (see below), whose sum is σ = 1445275926. Its totient is φ = 1064940072.

The previous prime is 1242430129. The next prime is 1242430157. The reversal of 1242430133 is 3310342421.

It can be written as a sum of positive squares in only one way, i.e., 672987364 + 569442769 = 25942^2 + 23863^2 .

It is not a de Polignac number, because 1242430133 - 2² = 1242430129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242430099 and 1242430108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242432133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12677810 + ... + 12677907.

It is an arithmetic number, because the mean of its divisors is an integer number (240879321).

Almost surely, 2^1242430133 is an apocalyptic number.

It is an amenable number.

1242430133 is a deficient number, since it is larger than the sum of its proper divisors (202845793).

1242430133 is an equidigital number, since it uses as much as digits as its factorization.

1242430133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25355731 (or 25355724 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1242430133 is about 35248.1224038955. The cubic root of 1242430133 is about 1075.0384361235.

Adding to 1242430133 its reverse (3310342421), we get a palindrome (4552772554).

The spelling of 1242430133 in words is "one billion, two hundred forty-two million, four hundred thirty thousand, one hundred thirty-three".