42272513 has 2 divisors, whose sum is σ = 42272514. Its totient is φ = 42272512.

The previous prime is 42272501. The next prime is 42272563. The reversal of 42272513 is 31527224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42211009 + 61504 = 6497^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 42272513 - 2⁶ = 42272449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42272563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21136256 + 21136257.

It is an arithmetic number, because the mean of its divisors is an integer number (21136257).

Almost surely, 2^42272513 is an apocalyptic number.

It is an amenable number.

42272513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42272513 is an equidigital number, since it uses as much as digits as its factorization.

42272513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 26.

The square root of 42272513 is about 6501.7315385980. The cubic root of 42272513 is about 348.3528399344.

Adding to 42272513 its reverse (31527224), we get a palindrome (73799737).

The spelling of 42272513 in words is "forty-two million, two hundred seventy-two thousand, five hundred thirteen".