142320142 has 8 divisors (see below), whose sum is σ = 213688800. Its totient is φ = 71090544.

The previous prime is 142320097. The next prime is 142320149. The reversal of 142320142 is 241023241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142320149) 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, 32167 + ... + 36322.

It is an arithmetic number, because the mean of its divisors is an integer number (26711100).

Almost surely, 2^142320142 is an apocalyptic number.

142320142 is a deficient number, since it is larger than the sum of its proper divisors (71368658).

142320142 is a wasteful number, since it uses less digits than its factorization.

142320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69530.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142320142 is about 11929.8005850894. The cubic root of 142320142 is about 522.1021193515.

Adding to 142320142 its reverse (241023241), we get a palindrome (383343383).

The spelling of 142320142 in words is "one hundred forty-two million, three hundred twenty thousand, one hundred forty-two".