42506411 has 2 divisors, whose sum is σ = 42506412. Its totient is φ = 42506410.

The previous prime is 42506383. The next prime is 42506413. The reversal of 42506411 is 11460524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42506411 - 2¹⁴ = 42490027 is a prime.

It is a super-2 number, since 2×42506411² = 3613589952201842, which contains 22 as substring.

Together with 42506413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42506413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21253205 + 21253206.

It is an arithmetic number, because the mean of its divisors is an integer number (21253206).

Almost surely, 2^42506411 is an apocalyptic number.

42506411 is a deficient number, since it is larger than the sum of its proper divisors (1).

42506411 is an equidigital number, since it uses as much as digits as its factorization.

42506411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 42506411 is about 6519.6940879155. The cubic root of 42506411 is about 348.9941488279.

Adding to 42506411 its reverse (11460524), we get a palindrome (53966935).

The spelling of 42506411 in words is "forty-two million, five hundred six thousand, four hundred eleven".