142121195 has 8 divisors (see below), whose sum is σ = 170673360. Its totient is φ = 113611680.

The previous prime is 142121179. The next prime is 142121219. The reversal of 142121195 is 591121241.

142121195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142121195 - 2⁴ = 142121179 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801 + ... + 17090.

It is an arithmetic number, because the mean of its divisors is an integer number (21334170).

Almost surely, 2^142121195 is an apocalyptic number.

142121195 is a deficient number, since it is larger than the sum of its proper divisors (28552165).

142121195 is a wasteful number, since it uses less digits than its factorization.

142121195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21325.

The product of its digits is 720, while the sum is 26.

The square root of 142121195 is about 11921.4594324688. The cubic root of 142121195 is about 521.8587265654.

The spelling of 142121195 in words is "one hundred forty-two million, one hundred twenty-one thousand, one hundred ninety-five".