142646242 has 8 divisors (see below), whose sum is σ = 216983232. Its totient is φ = 70318500.

The previous prime is 142646233. The next prime is 142646279. The reversal of 142646242 is 242646241.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502134 + ... + 502417.

It is an arithmetic number, because the mean of its divisors is an integer number (27122904).

Almost surely, 2^142646242 is an apocalyptic number.

142646242 is a deficient number, since it is larger than the sum of its proper divisors (74336990).

142646242 is a wasteful number, since it uses less digits than its factorization.

142646242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004624.

The product of its digits is 18432, while the sum is 31.

The square root of 142646242 is about 11943.4602188813. The cubic root of 142646242 is about 522.5005816405.

Subtracting 142646242 from its reverse (242646241), we obtain a palindrome (99999999).

The spelling of 142646242 in words is "one hundred forty-two million, six hundred forty-six thousand, two hundred forty-two".