142042238 has 8 divisors (see below), whose sum is σ = 229452888. Its totient is φ = 65557944.

The previous prime is 142042207. The next prime is 142042247. The reversal of 142042238 is 832240241.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 5463163 = 142042238 / (1 + 4 + 2 + 0 + 4 + 2 + 2 + 3 + 8).

It is a congruent 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, 2731556 + ... + 2731607.

It is an arithmetic number, because the mean of its divisors is an integer number (28681611).

Almost surely, 2^142042238 is an apocalyptic number.

142042238 is a deficient number, since it is larger than the sum of its proper divisors (87410650).

142042238 is a wasteful number, since it uses less digits than its factorization.

142042238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463178.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 142042238 is about 11918.1474231526. The cubic root of 142042238 is about 521.7620672028.

Adding to 142042238 its reverse (832240241), we get a palindrome (974282479).

The spelling of 142042238 in words is "one hundred forty-two million, forty-two thousand, two hundred thirty-eight".