142012122 has 64 divisors (see below), whose sum is σ = 333932544. Its totient is φ = 39424320.

The previous prime is 142012121. The next prime is 142012139. The reversal of 142012122 is 221210241.

It is not an unprimeable number, because it can be changed into a prime (142012121) 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 31 ways as a sum of consecutive naturals, for example, 291363 + ... + 291849.

It is an arithmetic number, because the mean of its divisors is an integer number (5217696).

Almost surely, 2^142012122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142012122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166966272).

142012122 is an abundant number, since it is smaller than the sum of its proper divisors (191920422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142012122 is a wasteful number, since it uses less digits than its factorization.

142012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 142012122 is about 11916.8839047798. The cubic root of 142012122 is about 521.7251896813.

Adding to 142012122 its reverse (221210241), we get a palindrome (363222363).

The spelling of 142012122 in words is "one hundred forty-two million, twelve thousand, one hundred twenty-two".