42505363 has 2 divisors, whose sum is σ = 42505364. Its totient is φ = 42505362.

The previous prime is 42505327. The next prime is 42505367. The reversal of 42505363 is 36350524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42505363 - 2²¹ = 40408211 is a prime.

It is not a weakly prime, because it can be changed into another prime (42505367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21252681 + 21252682.

It is an arithmetic number, because the mean of its divisors is an integer number (21252682).

Almost surely, 2^42505363 is an apocalyptic number.

42505363 is a deficient number, since it is larger than the sum of its proper divisors (1).

42505363 is an equidigital number, since it uses as much as digits as its factorization.

42505363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 42505363 is about 6519.6137155509. The cubic root of 42505363 is about 348.9912806419.

Adding to 42505363 its reverse (36350524), we get a palindrome (78855887).

The spelling of 42505363 in words is "forty-two million, five hundred five thousand, three hundred sixty-three".