142121231202 has 32 divisors (see below), whose sum is σ = 288985332672. Its totient is φ = 46585718784.

The previous prime is 142121231183. The next prime is 142121231207. The reversal of 142121231202 is 202132121241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142121231207) 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 15 ways as a sum of consecutive naturals, for example, 74403 + ... + 538310.

It is an arithmetic number, because the mean of its divisors is an integer number (9030791646).

Almost surely, 2^142121231202 is an apocalyptic number.

142121231202 is an abundant number, since it is smaller than the sum of its proper divisors (146864101470).

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

142121231202 is a wasteful number, since it uses less digits than its factorization.

142121231202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613362.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 142121231202 its reverse (202132121241), we get a palindrome (344253352443).

The spelling of 142121231202 in words is "one hundred forty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred two".