42511241 has 2 divisors, whose sum is σ = 42511242. Its totient is φ = 42511240.

The previous prime is 42511229. The next prime is 42511267. The reversal of 42511241 is 14211524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 841 = 6520^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 42511241 - 2⁶ = 42511177 is a prime.

It is a super-2 number, since 2×42511241² = 3614411222720162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42511741) 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, 21255620 + 21255621.

It is an arithmetic number, because the mean of its divisors is an integer number (21255621).

Almost surely, 2^42511241 is an apocalyptic number.

It is an amenable number.

42511241 is a deficient number, since it is larger than the sum of its proper divisors (1).

42511241 is an equidigital number, since it uses as much as digits as its factorization.

42511241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 20.

The square root of 42511241 is about 6520.0644935461. The cubic root of 42511241 is about 349.0073670527.

Adding to 42511241 its reverse (14211524), we get a palindrome (56722765).

The spelling of 42511241 in words is "forty-two million, five hundred eleven thousand, two hundred forty-one".