142338438 has 64 divisors (see below), whose sum is σ = 357004800. Its totient is φ = 41640480.

The previous prime is 142338379. The next prime is 142338439. The reversal of 142338438 is 834833241.

It is a happy number.

142338438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142338439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13095 + ... + 21357.

It is an arithmetic number, because the mean of its divisors is an integer number (5578200).

Almost surely, 2^142338438 is an apocalyptic number.

142338438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142338438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178502400).

142338438 is an abundant number, since it is smaller than the sum of its proper divisors (214666362).

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

142338438 is a wasteful number, since it uses less digits than its factorization.

142338438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8314 (or 8308 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 142338438 is about 11930.5673796345. The cubic root of 142338438 is about 522.1244913806.

The spelling of 142338438 in words is "one hundred forty-two million, three hundred thirty-eight thousand, four hundred thirty-eight".