142432355434440 has 128 divisors (see below), whose sum is σ = 430712983388160. Its totient is φ = 37678395734784.

The previous prime is 142432355434403. The next prime is 142432355434493. The reversal of 142432355434440 is 44434553234241.

It is a super-2 number, since 2×142432355434440² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142432355434440.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128179069 + ... + 129285491.

It is an arithmetic number, because the mean of its divisors is an integer number (3364945182720).

Almost surely, 2^{142432355434440} is an apocalyptic number.

142432355434440 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 142432355434440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215356491694080).

142432355434440 is an abundant number, since it is smaller than the sum of its proper divisors (288280627953720).

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

142432355434440 is a wasteful number, since it uses less digits than its factorization.

142432355434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115011 (or 1115007 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 48.

The spelling of 142432355434440 in words is "one hundred forty-two trillion, four hundred thirty-two billion, three hundred fifty-five million, four hundred thirty-four thousand, four hundred forty".