142136122400 has 144 divisors (see below), whose sum is σ = 359446134600. Its totient is φ = 54818856960.

The previous prime is 142136122397. The next prime is 142136122411. The reversal of 142136122400 is 4221631241.

It can be written as a sum of positive squares in 12 ways, for example, as 80041463056 + 62094659344 = 282916^2 + 249188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142136122400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18765014 + ... + 18772586.

Almost surely, 2^142136122400 is an apocalyptic number.

142136122400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142136122400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179723067300).

142136122400 is an abundant number, since it is smaller than the sum of its proper divisors (217310012200).

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

142136122400 is a wasteful number, since it uses less digits than its factorization.

142136122400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 142136122400 its reverse (4221631241), we get a palindrome (146357753641).

The spelling of 142136122400 in words is "one hundred forty-two billion, one hundred thirty-six million, one hundred twenty-two thousand, four hundred".