42204097 has 4 divisors (see below), whose sum is σ = 45450580. Its totient is φ = 38957616.

The previous prime is 42204079. The next prime is 42204109. The reversal of 42204097 is 79040224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21492496 + 20711601 = 4636^2 + 4551^2 .

It is a cyclic number.

It is not a de Polignac number, because 42204097 - 2⁷ = 42203969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42204017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623222 + ... + 1623247.

It is an arithmetic number, because the mean of its divisors is an integer number (11362645).

Almost surely, 2^42204097 is an apocalyptic number.

It is an amenable number.

42204097 is a deficient number, since it is larger than the sum of its proper divisors (3246483).

42204097 is a wasteful number, since it uses less digits than its factorization.

42204097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246482.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 42204097 is about 6496.4680404047. The cubic root of 42204097 is about 348.1648077653.

The spelling of 42204097 in words is "forty-two million, two hundred four thousand, ninety-seven".