142688198 has 4 divisors (see below), whose sum is σ = 214032300. Its totient is φ = 71344098.

The previous prime is 142688197. The next prime is 142688201. The reversal of 142688198 is 891886241.

It is a happy number.

142688198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891886241 = 47 ⋅18976303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142688197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35672048 + ... + 35672051.

It is an arithmetic number, because the mean of its divisors is an integer number (53508075).

Almost surely, 2^142688198 is an apocalyptic number.

142688198 is a deficient number, since it is larger than the sum of its proper divisors (71344102).

142688198 is an equidigital number, since it uses as much as digits as its factorization.

142688198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71344101.

The product of its digits is 221184, while the sum is 47.

The square root of 142688198 is about 11945.2165321521. The cubic root of 142688198 is about 522.5518036593.

The spelling of 142688198 in words is "one hundred forty-two million, six hundred eighty-eight thousand, one hundred ninety-eight".