42548197 has 2 divisors, whose sum is σ = 42548198. Its totient is φ = 42548196.

The previous prime is 42548189. The next prime is 42548243. The reversal of 42548197 is 79184524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34880836 + 7667361 = 5906^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 42548197 - 2³ = 42548189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42548117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21274098 + 21274099.

It is an arithmetic number, because the mean of its divisors is an integer number (21274099).

Almost surely, 2^42548197 is an apocalyptic number.

It is an amenable number.

42548197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42548197 is an equidigital number, since it uses as much as digits as its factorization.

42548197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 42548197 is about 6522.8978989403. The cubic root of 42548197 is about 349.1084711394.

The spelling of 42548197 in words is "forty-two million, five hundred forty-eight thousand, one hundred ninety-seven".