1243202401433 has 2 divisors, whose sum is σ = 1243202401434. Its totient is φ = 1243202401432.

The previous prime is 1243202401423. The next prime is 1243202401439. The reversal of 1243202401433 is 3341042023421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080657965209 + 162544436224 = 1039547^2 + 403168^2 .

It is an emirp because it is prime and its reverse (3341042023421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243202401433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243202401396 and 1243202401405.

It is not a weakly prime, because it can be changed into another prime (1243202401439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621601200716 + 621601200717.

It is an arithmetic number, because the mean of its divisors is an integer number (621601200717).

Almost surely, 2^{1243202401433} is an apocalyptic number.

It is an amenable number.

1243202401433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243202401433 is an equidigital number, since it uses as much as digits as its factorization.

1243202401433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 1243202401433 its reverse (3341042023421), we get a palindrome (4584244424854).

The spelling of 1243202401433 in words is "one trillion, two hundred forty-three billion, two hundred two million, four hundred one thousand, four hundred thirty-three".