42561341 has 2 divisors, whose sum is σ = 42561342. Its totient is φ = 42561340.

The previous prime is 42561331. The next prime is 42561377. The reversal of 42561341 is 14316524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26728900 + 15832441 = 5170^2 + 3979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42561341 is a prime.

It is a super-2 number, since 2×42561341² = 3622935495436562, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42561341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42561331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21280670 + 21280671.

It is an arithmetic number, because the mean of its divisors is an integer number (21280671).

Almost surely, 2^42561341 is an apocalyptic number.

It is an amenable number.

42561341 is a deficient number, since it is larger than the sum of its proper divisors (1).

42561341 is an equidigital number, since it uses as much as digits as its factorization.

42561341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 42561341 is about 6523.9053487922. The cubic root of 42561341 is about 349.1444163312.

Adding to 42561341 its reverse (14316524), we get a palindrome (56877865).

The spelling of 42561341 in words is "forty-two million, five hundred sixty-one thousand, three hundred forty-one".