142134431045440 has 112 divisors (see below), whose sum is σ = 341812071020160. Its totient is φ = 56290515240960.

The previous prime is 142134431045413. The next prime is 142134431045449. The reversal of 142134431045440 is 44540134431241.

It is a super-2 number, since 2×142134431045440² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 142134431045393 and 142134431045402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142134431045449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165062731 + ... + 165921589.

Almost surely, 2^{142134431045440} is an apocalyptic number.

142134431045440 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 142134431045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170906035510080).

142134431045440 is an abundant number, since it is smaller than the sum of its proper divisors (199677639974720).

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

142134431045440 is a wasteful number, since it uses less digits than its factorization.

142134431045440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864000 (or 863990 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

Adding to 142134431045440 its reverse (44540134431241), we get a palindrome (186674565476681).

The spelling of 142134431045440 in words is "one hundred forty-two trillion, one hundred thirty-four billion, four hundred thirty-one million, forty-five thousand, four hundred forty".