42274513 has 2 divisors, whose sum is σ = 42274514. Its totient is φ = 42274512.

The previous prime is 42274511. The next prime is 42274537. The reversal of 42274513 is 31547224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42211009 + 63504 = 6497^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 42274513 - 2¹ = 42274511 is a prime.

Together with 42274511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42274511) 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, 21137256 + 21137257.

It is an arithmetic number, because the mean of its divisors is an integer number (21137257).

Almost surely, 2^42274513 is an apocalyptic number.

It is an amenable number.

42274513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42274513 is an equidigital number, since it uses as much as digits as its factorization.

42274513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 42274513 is about 6501.8853419604. The cubic root of 42274513 is about 348.3583336121.

The spelling of 42274513 in words is "forty-two million, two hundred seventy-four thousand, five hundred thirteen".