142424044430440 has 128 divisors (see below), whose sum is σ = 330092470404000. Its totient is φ = 55265458913280.

The previous prime is 142424044430419. The next prime is 142424044430441. The reversal of 142424044430440 is 44034440424241.

It can be written as a sum of positive squares in 16 ways, for example, as 25948448857444 + 116475595572996 = 5093962^2 + 10792386^2 .

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 = 142424044430393 and 142424044430402.

It is not an unprimeable number, because it can be changed into a prime (142424044430441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904332982 + ... + 904490458.

Almost surely, 2^{142424044430440} is an apocalyptic number.

142424044430440 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 142424044430440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165046235202000).

142424044430440 is an abundant number, since it is smaller than the sum of its proper divisors (187668425973560).

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

142424044430440 is a wasteful number, since it uses less digits than its factorization.

142424044430440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159335 (or 159331 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 40.

Adding to 142424044430440 its reverse (44034440424241), we get a palindrome (186458484854681).

The spelling of 142424044430440 in words is "one hundred forty-two trillion, four hundred twenty-four billion, forty-four million, four hundred thirty thousand, four hundred forty".