198321142 has 8 divisors (see below), whose sum is σ = 297838800. Its totient is φ = 99041544.

The previous prime is 198321127. The next prime is 198321143. The reversal of 198321142 is 241123891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198321143) 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, 57417 + ... + 60772.

It is an arithmetic number, because the mean of its divisors is an integer number (37229850).

Almost surely, 2^198321142 is an apocalyptic number.

198321142 is a deficient number, since it is larger than the sum of its proper divisors (99517658).

198321142 is a wasteful number, since it uses less digits than its factorization.

198321142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119030.

The product of its digits is 3456, while the sum is 31.

The square root of 198321142 is about 14082.6539402202. The cubic root of 198321142 is about 583.1626106839.

The spelling of 198321142 in words is "one hundred ninety-eight million, three hundred twenty-one thousand, one hundred forty-two".