42528197 has 2 divisors, whose sum is σ = 42528198. Its totient is φ = 42528196.

The previous prime is 42528179. The next prime is 42528221. The reversal of 42528197 is 79182524.

42528197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (42528179) 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., 24542116 + 17986081 = 4954^2 + 4241^2 .

It is a cyclic number.

It is not a de Polignac number, because 42528197 - 2¹⁴ = 42511813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42528197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42528097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21264098 + 21264099.

It is an arithmetic number, because the mean of its divisors is an integer number (21264099).

Almost surely, 2^42528197 is an apocalyptic number.

It is an amenable number.

42528197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42528197 is an equidigital number, since it uses as much as digits as its factorization.

42528197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 42528197 is about 6521.3646577998. The cubic root of 42528197 is about 349.0537624858.

The spelling of 42528197 in words is "forty-two million, five hundred twenty-eight thousand, one hundred ninety-seven".