142140422 has 8 divisors (see below), whose sum is σ = 213490200. Its totient is φ = 70977024.

The previous prime is 142140419. The next prime is 142140457. The reversal of 142140422 is 224041241.

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

It is a junction number, because it is equal to n+sod(n) for n = 142140394 and 142140403.

It is a congruent number.

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, 44672 + ... + 47747.

It is an arithmetic number, because the mean of its divisors is an integer number (26686275).

Almost surely, 2^142140422 is an apocalyptic number.

142140422 is a deficient number, since it is larger than the sum of its proper divisors (71349778).

142140422 is an equidigital number, since it uses as much as digits as its factorization.

142140422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93190.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142140422 is about 11922.2658081423. The cubic root of 142140422 is about 521.8822588876.

Adding to 142140422 its reverse (224041241), we get a palindrome (366181663).

The spelling of 142140422 in words is "one hundred forty-two million, one hundred forty thousand, four hundred twenty-two".