142444432 has 20 divisors (see below), whose sum is σ = 297216220. Its totient is φ = 65743488.

The previous prime is 142444429. The next prime is 142444439. The reversal of 142444432 is 234444241.

It can be written as a sum of positive squares in 2 ways, for example, as 93779856 + 48664576 = 9684^2 + 6976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142444432.

It is not an unprimeable number, because it can be changed into a prime (142444439) 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 3 ways as a sum of consecutive naturals, for example, 342207 + ... + 342622.

It is an arithmetic number, because the mean of its divisors is an integer number (14860811).

Almost surely, 2^142444432 is an apocalyptic number.

It is an amenable number.

142444432 is an abundant number, since it is smaller than the sum of its proper divisors (154771788).

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

142444432 is a wasteful number, since it uses less digits than its factorization.

142444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684850 (or 684844 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 142444432 is about 11935.0086719700. The cubic root of 142444432 is about 522.2540612816.

Adding to 142444432 its reverse (234444241), we get a palindrome (376888673).

The spelling of 142444432 in words is "one hundred forty-two million, four hundred forty-four thousand, four hundred thirty-two".