198220042 has 8 divisors (see below), whose sum is σ = 297403776. Its totient is φ = 99085452.

The previous prime is 198220037. The next prime is 198220069. The reversal of 198220042 is 240022891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433 + ... + 19915.

It is an arithmetic number, because the mean of its divisors is an integer number (37175472).

Almost surely, 2^198220042 is an apocalyptic number.

198220042 is a deficient number, since it is larger than the sum of its proper divisors (99183734).

198220042 is a wasteful number, since it uses less digits than its factorization.

198220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24572.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 198220042 is about 14079.0639603633. The cubic root of 198220042 is about 583.0634991105.

The spelling of 198220042 in words is "one hundred ninety-eight million, two hundred twenty thousand, forty-two".