142220342 has 8 divisors (see below), whose sum is σ = 232724232. Its totient is φ = 64645600.

The previous prime is 142220329. The next prime is 142220347. The reversal of 142220342 is 243022241.

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 (142220347) 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, 3232259 + ... + 3232302.

It is an arithmetic number, because the mean of its divisors is an integer number (29090529).

Almost surely, 2^142220342 is an apocalyptic number.

142220342 is a deficient number, since it is larger than the sum of its proper divisors (90503890).

142220342 is a wasteful number, since it uses less digits than its factorization.

142220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464574.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142220342 is about 11925.6170490252. The cubic root of 142220342 is about 521.9800518891.

Adding to 142220342 its reverse (243022241), we get a palindrome (385242583).

The spelling of 142220342 in words is "one hundred forty-two million, two hundred twenty thousand, three hundred forty-two".