4272729 has 16 divisors (see below), whose sum is σ = 6076800. Its totient is φ = 2661120.

The previous prime is 4272727. The next prime is 4272731. The reversal of 4272729 is 9272724.

It is an interprime number because it is at equal distance from previous prime (4272727) and next prime (4272731).

It is not a de Polignac number, because 4272729 - 2¹ = 4272727 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 7 + 2⁹ + 7⁵ + 2¹¹ + 9⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 4272729.

It is not an unprimeable number, because it can be changed into a prime (4272727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9939 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (379800).

Almost surely, 2^4272729 is an apocalyptic number.

It is an amenable number.

4272729 is a deficient number, since it is larger than the sum of its proper divisors (1804071).

4272729 is a wasteful number, since it uses less digits than its factorization.

4272729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 14112, while the sum is 33.

The square root of 4272729 is about 2067.0580543371. The cubic root of 4272729 is about 162.2688342282.

It can be divided in two parts, 42 and 72729, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 4272729 in words is "four million, two hundred seventy-two thousand, seven hundred twenty-nine".