42534413 has 2 divisors, whose sum is σ = 42534414. Its totient is φ = 42534412.

The previous prime is 42534409. The next prime is 42534419. The reversal of 42534413 is 31443524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30052324 + 12482089 = 5482^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 42534413 - 2² = 42534409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42534419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21267206 + 21267207.

It is an arithmetic number, because the mean of its divisors is an integer number (21267207).

Almost surely, 2^42534413 is an apocalyptic number.

It is an amenable number.

42534413 is a deficient number, since it is larger than the sum of its proper divisors (1).

42534413 is an equidigital number, since it uses as much as digits as its factorization.

42534413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 42534413 is about 6521.8412277516. The cubic root of 42534413 is about 349.0707677720.

Adding to 42534413 its reverse (31443524), we get a palindrome (73977937).

The spelling of 42534413 in words is "forty-two million, five hundred thirty-four thousand, four hundred thirteen".