138134241 has 20 divisors (see below), whose sum is σ = 235828032. Its totient is φ = 78933528.

The previous prime is 138134239. The next prime is 138134257. The reversal of 138134241 is 142431831.

It is not a de Polignac number, because 138134241 - 2¹ = 138134239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138134291) 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 19 ways as a sum of consecutive naturals, for example, 121245 + ... + 122378.

Almost surely, 2^138134241 is an apocalyptic number.

It is an amenable number.

138134241 is a deficient number, since it is larger than the sum of its proper divisors (97693791).

138134241 is an equidigital number, since it uses as much as digits as its factorization.

138134241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243642 (or 243633 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 138134241 is about 11753.0524120332. The cubic root of 138134241 is about 516.9324338322.

The spelling of 138134241 in words is "one hundred thirty-eight million, one hundred thirty-four thousand, two hundred forty-one".