7241729 has 12 divisors (see below), whose sum is σ = 8055012. Its totient is φ = 6504960.

The previous prime is 7241723. The next prime is 7241743. The reversal of 7241729 is 9271427.

It can be written as a sum of positive squares in 2 ways, for example, as 1385329 + 5856400 = 1177^2 + 2420^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7241729 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7241695 and 7241704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7241723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11429 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (671251).

It is a Proth number, since it is equal to 221 ⋅ 2¹⁵ + 1 and 221 < 2¹⁵.

Almost surely, 2^7241729 is an apocalyptic number.

It is an amenable number.

7241729 is a deficient number, since it is larger than the sum of its proper divisors (813283).

7241729 is a wasteful number, since it uses less digits than its factorization.

7241729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 725 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 7241729 is about 2691.0460791298. The cubic root of 7241729 is about 193.4702039777.

The spelling of 7241729 in words is "seven million, two hundred forty-one thousand, seven hundred twenty-nine".