142175906 has 8 divisors (see below), whose sum is σ = 213992604. Its totient is φ = 70845040.

The previous prime is 142175881. The next prime is 142175909. The reversal of 142175906 is 609571241.

142175906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110355025 + 31820881 = 10505^2 + 5641^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142175909) 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, 120725 + ... + 121896.

Almost surely, 2^142175906 is an apocalyptic number.

142175906 is a deficient number, since it is larger than the sum of its proper divisors (71816698).

142175906 is a wasteful number, since it uses less digits than its factorization.

142175906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242916.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 142175906 is about 11923.7538552253. The cubic root of 142175906 is about 521.9256829164.

The spelling of 142175906 in words is "one hundred forty-two million, one hundred seventy-five thousand, nine hundred six".