42054913 has 2 divisors, whose sum is σ = 42054914. Its totient is φ = 42054912.

The previous prime is 42054911. The next prime is 42054931. The reversal of 42054913 is 31945024.

Together with next prime (42054931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32855824 + 9199089 = 5732^2 + 3033^2 .

It is a cyclic number.

It is not a de Polignac number, because 42054913 - 2¹ = 42054911 is a prime.

Together with 42054911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42054911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21027456 + 21027457.

It is an arithmetic number, because the mean of its divisors is an integer number (21027457).

Almost surely, 2^42054913 is an apocalyptic number.

It is an amenable number.

42054913 is a deficient number, since it is larger than the sum of its proper divisors (1).

42054913 is an equidigital number, since it uses as much as digits as its factorization.

42054913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 42054913 is about 6484.9759444427. The cubic root of 42054913 is about 347.7540898244.

Adding to 42054913 its reverse (31945024), we get a palindrome (73999937).

The spelling of 42054913 in words is "forty-two million, fifty-four thousand, nine hundred thirteen".