4138541 has 4 divisors (see below), whose sum is σ = 4514784. Its totient is φ = 3762300.

The previous prime is 4138529. The next prime is 4138543. The reversal of 4138541 is 1458314.

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 a de Polignac number, because none of the positive numbers 2^k-4138541 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4138541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138543) 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 3 ways as a sum of consecutive naturals, for example, 188105 + ... + 188126.

It is an arithmetic number, because the mean of its divisors is an integer number (1128696).

Almost surely, 2^4138541 is an apocalyptic number.

It is an amenable number.

4138541 is a deficient number, since it is larger than the sum of its proper divisors (376243).

4138541 is a wasteful number, since it uses less digits than its factorization.

4138541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376242.

The product of its digits is 1920, while the sum is 26.

The square root of 4138541 is about 2034.3404336541. The cubic root of 4138541 is about 160.5520125937.

The spelling of 4138541 in words is "four million, one hundred thirty-eight thousand, five hundred forty-one".