238340142 has 72 divisors (see below), whose sum is σ = 558341784. Its totient is φ = 73428768.

The previous prime is 238340129. The next prime is 238340147. The reversal of 238340142 is 241043832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238340147) 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 35 ways as a sum of consecutive naturals, for example, 278988 + ... + 279840.

It is an arithmetic number, because the mean of its divisors is an integer number (7754747).

Almost surely, 2^238340142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238340142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279170892).

238340142 is an abundant number, since it is smaller than the sum of its proper divisors (320001642).

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

238340142 is a wasteful number, since it uses less digits than its factorization.

238340142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 238340142 is about 15438.2687500898. The cubic root of 238340142 is about 620.0105287841.

Adding to 238340142 its reverse (241043832), we get a palindrome (479383974).

The spelling of 238340142 in words is "two hundred thirty-eight million, three hundred forty thousand, one hundred forty-two".