142433440 has 48 divisors (see below), whose sum is σ = 338173920. Its totient is φ = 56689920.

The previous prime is 142433399. The next prime is 142433441. The reversal of 142433440 is 44334241.

It is not an unprimeable number, because it can be changed into a prime (142433441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31651 + ... + 35869.

It is an arithmetic number, because the mean of its divisors is an integer number (7045290).

Almost surely, 2^142433440 is an apocalyptic number.

142433440 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 142433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169086960).

142433440 is an abundant number, since it is smaller than the sum of its proper divisors (195740480).

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

142433440 is a wasteful number, since it uses less digits than its factorization.

142433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 4437 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 142433440 is about 11934.5481690762. The cubic root of 142433440 is about 522.2406273546.

Adding to 142433440 its reverse (44334241), we get a palindrome (186767681).

The spelling of 142433440 in words is "one hundred forty-two million, four hundred thirty-three thousand, four hundred forty".