138402116 has 6 divisors (see below), whose sum is σ = 242203710. Its totient is φ = 69201056.

The previous prime is 138402113. The next prime is 138402179. The reversal of 138402116 is 611204831.

138402116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114918400 + 23483716 = 10720^2 + 4846^2 .

It is a super-3 number, since 3×138402116³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138402113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17300261 + ... + 17300268.

It is an arithmetic number, because the mean of its divisors is an integer number (40367285).

Almost surely, 2^138402116 is an apocalyptic number.

It is an amenable number.

138402116 is a deficient number, since it is larger than the sum of its proper divisors (103801594).

138402116 is a wasteful number, since it uses less digits than its factorization.

138402116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34600533 (or 34600531 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 138402116 is about 11764.4428682365. The cubic root of 138402116 is about 517.2663695269.

Adding to 138402116 its reverse (611204831), we get a palindrome (749606947).

The spelling of 138402116 in words is "one hundred thirty-eight million, four hundred two thousand, one hundred sixteen".