142240242 has 8 divisors (see below), whose sum is σ = 284480496. Its totient is φ = 47413412.

The previous prime is 142240223. The next prime is 142240249. The reversal of 142240242 is 242042241.

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

142240242 is an admirable number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (142240249) 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, 11853348 + ... + 11853359.

It is an arithmetic number, because the mean of its divisors is an integer number (35560062).

Almost surely, 2^142240242 is an apocalyptic number.

142240242 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.

142240242 is a wasteful number, since it uses less digits than its factorization.

142240242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23706712.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142240242 is about 11926.4513582205. The cubic root of 142240242 is about 522.0043965514.

Adding to 142240242 its reverse (242042241), we get a palindrome (384282483).

The spelling of 142240242 in words is "one hundred forty-two million, two hundred forty thousand, two hundred forty-two".