142321452240 has 160 divisors (see below), whose sum is σ = 483750216576. Its totient is φ = 34326906880.

The previous prime is 142321452233. The next prime is 142321452271. The reversal of 142321452240 is 42254123241.

It is a happy number.

142321452240 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142321452198 and 142321452207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383254 + ... + 656906.

Almost surely, 2^142321452240 is an apocalyptic number.

142321452240 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 142321452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241875108288).

142321452240 is an abundant number, since it is smaller than the sum of its proper divisors (341428764336).

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

142321452240 is a wasteful number, since it uses less digits than its factorization.

142321452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273877 (or 273871 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 142321452240 its reverse (42254123241), we get a palindrome (184575575481).

The spelling of 142321452240 in words is "one hundred forty-two billion, three hundred twenty-one million, four hundred fifty-two thousand, two hundred forty".