142381146 has 8 divisors (see below), whose sum is σ = 284762304. Its totient is φ = 47460380.

The previous prime is 142381139. The next prime is 142381163. The reversal of 142381146 is 641183241.

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

142381146 is an admirable 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, 11865090 + ... + 11865101.

It is an arithmetic number, because the mean of its divisors is an integer number (35595288).

Almost surely, 2^142381146 is an apocalyptic number.

142381146 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.

142381146 is a wasteful number, since it uses less digits than its factorization.

142381146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23730196.

The product of its digits is 4608, while the sum is 30.

The square root of 142381146 is about 11932.3571015956. The cubic root of 142381146 is about 522.1767065171.

The spelling of 142381146 in words is "one hundred forty-two million, three hundred eighty-one thousand, one hundred forty-six".