142972194 has 8 divisors (see below), whose sum is σ = 285944400. Its totient is φ = 47657396.

The previous prime is 142972189. The next prime is 142972211. The reversal of 142972194 is 491279241.

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

142972194 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11914344 + ... + 11914355.

It is an arithmetic number, because the mean of its divisors is an integer number (35743050).

Almost surely, 2^142972194 is an apocalyptic number.

142972194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142972194 is a wasteful number, since it uses less digits than its factorization.

142972194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23828704.

The product of its digits is 36288, while the sum is 39.

The square root of 142972194 is about 11957.0980593119. The cubic root of 142972194 is about 522.8982566860.

The spelling of 142972194 in words is "one hundred forty-two million, nine hundred seventy-two thousand, one hundred ninety-four".