138121062 has 16 divisors (see below), whose sum is σ = 282120192. Its totient is φ = 45060680.

The previous prime is 138121007. The next prime is 138121069. The reversal of 138121062 is 260121831.

138121062 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 (138121069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244614 + ... + 245177.

It is an arithmetic number, because the mean of its divisors is an integer number (17632512).

Almost surely, 2^138121062 is an apocalyptic number.

138121062 is an abundant number, since it is smaller than the sum of its proper divisors (143999130).

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

138121062 is a wasteful number, since it uses less digits than its factorization.

138121062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489843.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 138121062 is about 11752.4917357980. The cubic root of 138121062 is about 516.9159936187.

Adding to 138121062 its reverse (260121831), we get a palindrome (398242893).

The spelling of 138121062 in words is "one hundred thirty-eight million, one hundred twenty-one thousand, sixty-two".