138965041 has 4 divisors (see below), whose sum is σ = 141921792. Its totient is φ = 136008292.

The previous prime is 138965009. The next prime is 138965053. The reversal of 138965041 is 140569831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138965041 - 2⁵ = 138965009 is a prime.

It is a super-2 number, since 2×138965041² = 38622565240263362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138965641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478305 + ... + 1478398.

It is an arithmetic number, because the mean of its divisors is an integer number (35480448).

Almost surely, 2^138965041 is an apocalyptic number.

It is an amenable number.

138965041 is a deficient number, since it is larger than the sum of its proper divisors (2956751).

138965041 is an equidigital number, since it uses as much as digits as its factorization.

138965041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956750.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 138965041 is about 11788.3434374809. The cubic root of 138965041 is about 517.9667159584.

It can be divided in two parts, 1389 and 65041, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 138965041 in words is "one hundred thirty-eight million, nine hundred sixty-five thousand, forty-one".