42554197 has 6 divisors (see below), whose sum is σ = 49501878. Its totient is φ = 36474984.

The previous prime is 42554173. The next prime is 42554201. The reversal of 42554197 is 79145524.

It can be written as a sum of positive squares in only one way, i.e., 29658916 + 12895281 = 5446^2 + 3591^2 .

It is not a de Polignac number, because 42554197 - 2⁷ = 42554069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42554147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 434178 + ... + 434275.

It is an arithmetic number, because the mean of its divisors is an integer number (8250313).

Almost surely, 2^42554197 is an apocalyptic number.

It is an amenable number.

42554197 is a deficient number, since it is larger than the sum of its proper divisors (6947681).

42554197 is an equidigital number, since it uses as much as digits as its factorization.

42554197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868467 (or 868460 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 42554197 is about 6523.3578010102. The cubic root of 42554197 is about 349.1248803923.

The spelling of 42554197 in words is "forty-two million, five hundred fifty-four thousand, one hundred ninety-seven".