198626142 has 64 divisors (see below), whose sum is σ = 469647360. Its totient is φ = 55209600.

The previous prime is 198626117. The next prime is 198626161. The reversal of 198626142 is 241626891.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 198626142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154659 + ... + 155937.

It is an arithmetic number, because the mean of its divisors is an integer number (7338240).

Almost surely, 2^198626142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198626142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234823680).

198626142 is an abundant number, since it is smaller than the sum of its proper divisors (271021218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198626142 is a wasteful number, since it uses less digits than its factorization.

198626142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489.

The product of its digits is 41472, while the sum is 39.

The square root of 198626142 is about 14093.4787047059. The cubic root of 198626142 is about 583.4614080325.

The spelling of 198626142 in words is "one hundred ninety-eight million, six hundred twenty-six thousand, one hundred forty-two".