5123729 has 8 divisors (see below), whose sum is σ = 5653032. Its totient is φ = 4613760.

The previous prime is 5123719. The next prime is 5123743. The reversal of 5123729 is 9273215.

It can be written as a sum of positive squares in 4 ways, for example, as 384400 + 4739329 = 620^2 + 2177^2 .

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 5123729 - 2¹² = 5119633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4274 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (706629).

Almost surely, 2^5123729 is an apocalyptic number.

It is an amenable number.

5123729 is a deficient number, since it is larger than the sum of its proper divisors (529303).

5123729 is a wasteful number, since it uses less digits than its factorization.

5123729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667.

The product of its digits is 3780, while the sum is 29.

The square root of 5123729 is about 2263.5655501885. The cubic root of 5123729 is about 172.3966082095.

The spelling of 5123729 in words is "five million, one hundred twenty-three thousand, seven hundred twenty-nine".