42854197 has 2 divisors, whose sum is σ = 42854198. Its totient is φ = 42854196.

The previous prime is 42854191. The next prime is 42854219. The reversal of 42854197 is 79145824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33281361 + 9572836 = 5769^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 42854197 - 2⁷ = 42854069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42854191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21427098 + 21427099.

It is an arithmetic number, because the mean of its divisors is an integer number (21427099).

Almost surely, 2^42854197 is an apocalyptic number.

It is an amenable number.

42854197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42854197 is an equidigital number, since it uses as much as digits as its factorization.

42854197 is an odious number, because the sum of its binary digits is odd.

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

The square root of 42854197 is about 6546.3117096576. The cubic root of 42854197 is about 349.9433840396.

The spelling of 42854197 in words is "forty-two million, eight hundred fifty-four thousand, one hundred ninety-seven".