142421312122 has 8 divisors (see below), whose sum is σ = 215522516916. Its totient is φ = 70580473152.

The previous prime is 142421312107. The next prime is 142421312123. The reversal of 142421312122 is 221213124241.

It can be written as a sum of positive squares in 2 ways, for example, as 132984938241 + 9436373881 = 364671^2 + 97141^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142421312123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315091173 + ... + 315091624.

Almost surely, 2^142421312122 is an apocalyptic number.

142421312122 is a deficient number, since it is larger than the sum of its proper divisors (73101204794).

142421312122 is a wasteful number, since it uses less digits than its factorization.

142421312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630182912.

The product of its digits is 1536, while the sum is 25.

Adding to 142421312122 its reverse (221213124241), we get a palindrome (363634436363).

The spelling of 142421312122 in words is "one hundred forty-two billion, four hundred twenty-one million, three hundred twelve thousand, one hundred twenty-two".