138303142 has 16 divisors (see below), whose sum is σ = 211357872. Its totient is φ = 67858560.

The previous prime is 138303133. The next prime is 138303161. The reversal of 138303142 is 241303831.

138303142 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35818 + ... + 39490.

It is an arithmetic number, because the mean of its divisors is an integer number (13209867).

Almost surely, 2^138303142 is an apocalyptic number.

138303142 is a deficient number, since it is larger than the sum of its proper divisors (73054730).

138303142 is a wasteful number, since it uses less digits than its factorization.

138303142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 138303142 is about 11760.2356268912. The cubic root of 138303142 is about 517.1430377655.

Adding to 138303142 its reverse (241303831), we get a palindrome (379606973).

The spelling of 138303142 in words is "one hundred thirty-eight million, three hundred three thousand, one hundred forty-two".