4138743 has 8 divisors (see below), whose sum is σ = 6306688. Its totient is φ = 2364984.

The previous prime is 4138741. The next prime is 4138747. The reversal of 4138743 is 3478314.

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

It is not a de Polignac number, because 4138743 - 2¹ = 4138741 is a prime.

It is a Duffinian number.

4138743 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4138743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138741) 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, 98521 + ... + 98562.

It is an arithmetic number, because the mean of its divisors is an integer number (788336).

Almost surely, 2^4138743 is an apocalyptic number.

4138743 is a deficient number, since it is larger than the sum of its proper divisors (2167945).

4138743 is a wasteful number, since it uses less digits than its factorization.

4138743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197093.

The product of its digits is 8064, while the sum is 30.

The square root of 4138743 is about 2034.3900805893. The cubic root of 4138743 is about 160.5546247042.

The spelling of 4138743 in words is "four million, one hundred thirty-eight thousand, seven hundred forty-three".