142105242 has 8 divisors (see below), whose sum is σ = 284210496. Its totient is φ = 47368412.

The previous prime is 142105241. The next prime is 142105259. The reversal of 142105242 is 242501241.

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

142105242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (142105241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11842098 + ... + 11842109.

It is an arithmetic number, because the mean of its divisors is an integer number (35526312).

Almost surely, 2^142105242 is an apocalyptic number.

142105242 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.

142105242 is a wasteful number, since it uses less digits than its factorization.

142105242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23684212.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142105242 is about 11920.7903261487. The cubic root of 142105242 is about 521.8391997482.

Adding to 142105242 its reverse (242501241), we get a palindrome (384606483).

The spelling of 142105242 in words is "one hundred forty-two million, one hundred five thousand, two hundred forty-two".