42504433 has 2 divisors, whose sum is σ = 42504434. Its totient is φ = 42504432.

The previous prime is 42504337. The next prime is 42504479. The reversal of 42504433 is 33440524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 85264 = 6513^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 42504433 - 2¹³ = 42496241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42504398 and 42504407.

It is not a weakly prime, because it can be changed into another prime (42504533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21252216 + 21252217.

It is an arithmetic number, because the mean of its divisors is an integer number (21252217).

Almost surely, 2^42504433 is an apocalyptic number.

It is an amenable number.

42504433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42504433 is an equidigital number, since it uses as much as digits as its factorization.

42504433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 42504433 is about 6519.5423919168. The cubic root of 42504433 is about 348.9887353611.

Adding to 42504433 its reverse (33440524), we get a palindrome (75944957).

The spelling of 42504433 in words is "forty-two million, five hundred four thousand, four hundred thirty-three".