198004127 has 4 divisors (see below), whose sum is σ = 198131736. Its totient is φ = 197876520.

The previous prime is 198004069. The next prime is 198004133. The reversal of 198004127 is 721400891.

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

It is a cyclic number.

It is not a de Polignac number, because 198004127 - 2²⁴ = 181226911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198004093 and 198004102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198004327) 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, 61448 + ... + 64589.

It is an arithmetic number, because the mean of its divisors is an integer number (49532934).

Almost surely, 2^198004127 is an apocalyptic number.

198004127 is a deficient number, since it is larger than the sum of its proper divisors (127609).

198004127 is a wasteful number, since it uses less digits than its factorization.

198004127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127608.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 198004127 is about 14071.3939252655. The cubic root of 198004127 is about 582.8517178127.

The spelling of 198004127 in words is "one hundred ninety-eight million, four thousand, one hundred twenty-seven".