142442122 has 8 divisors (see below), whose sum is σ = 214596900. Its totient is φ = 70909824.

The previous prime is 142442093. The next prime is 142442129. The reversal of 142442122 is 221244241.

It can be written as a sum of positive squares in 2 ways, for example, as 137147521 + 5294601 = 11711^2 + 2301^2 .

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 = 142442093 and 142442102.

It is not an unprimeable number, because it can be changed into a prime (142442129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155047 + ... + 155962.

Almost surely, 2^142442122 is an apocalyptic number.

142442122 is a deficient number, since it is larger than the sum of its proper divisors (72154778).

142442122 is a wasteful number, since it uses less digits than its factorization.

142442122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311240.

The product of its digits is 1024, while the sum is 22.

The square root of 142442122 is about 11934.9118974545. The cubic root of 142442122 is about 522.2512381611.

Adding to 142442122 its reverse (221244241), we get a palindrome (363686363).

The spelling of 142442122 in words is "one hundred forty-two million, four hundred forty-two thousand, one hundred twenty-two".