42121230033433 has 2 divisors, whose sum is σ = 42121230033434. Its totient is φ = 42121230033432.

The previous prime is 42121230033413. The next prime is 42121230033437. The reversal of 42121230033433 is 33433003212124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40120227406809 + 2001002626624 = 6334053^2 + 1414568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42121230033433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42121230033395 and 42121230033404.

It is not a weakly prime, because it can be changed into another prime (42121230033437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060615016716 + 21060615016717.

It is an arithmetic number, because the mean of its divisors is an integer number (21060615016717).

Almost surely, 2^{42121230033433} is an apocalyptic number.

It is an amenable number.

42121230033433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42121230033433 is an equidigital number, since it uses as much as digits as its factorization.

42121230033433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 42121230033433 its reverse (33433003212124), we get a palindrome (75554233245557).

The spelling of 42121230033433 in words is "forty-two trillion, one hundred twenty-one billion, two hundred thirty million, thirty-three thousand, four hundred thirty-three".