138203134 has 32 divisors (see below), whose sum is σ = 217002240. Its totient is φ = 65975232.

The previous prime is 138203083. The next prime is 138203141. The reversal of 138203134 is 431302831.

It is a junction number, because it is equal to n+sod(n) for n = 138203099 and 138203108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1008714 + ... + 1008850.

It is an arithmetic number, because the mean of its divisors is an integer number (6781320).

Almost surely, 2^138203134 is an apocalyptic number.

138203134 is a deficient number, since it is larger than the sum of its proper divisors (78799106).

138203134 is a wasteful number, since it uses less digits than its factorization.

138203134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

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

The square root of 138203134 is about 11755.9829023353. The cubic root of 138203134 is about 517.0183577542.

Adding to 138203134 its reverse (431302831), we get a palindrome (569505965).

The spelling of 138203134 in words is "one hundred thirty-eight million, two hundred three thousand, one hundred thirty-four".