138057241 has 8 divisors (see below), whose sum is σ = 158229504. Its totient is φ = 117997440.

The previous prime is 138057239. The next prime is 138057253. The reversal of 138057241 is 142750831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138057241 - 2¹ = 138057239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138057281) 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, 25465 + ... + 30406.

It is an arithmetic number, because the mean of its divisors is an integer number (19778688).

Almost surely, 2^138057241 is an apocalyptic number.

It is an amenable number.

138057241 is a deficient number, since it is larger than the sum of its proper divisors (20172263).

138057241 is an equidigital number, since it uses as much as digits as its factorization.

138057241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56231.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 138057241 is about 11749.7762106348. The cubic root of 138057241 is about 516.8363649759.

The spelling of 138057241 in words is "one hundred thirty-eight million, fifty-seven thousand, two hundred forty-one".