2729121 has 8 divisors (see below), whose sum is σ = 3675264. Its totient is φ = 1801200.

The previous prime is 2729119. The next prime is 2729137. The reversal of 2729121 is 1219272.

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

It is not a de Polignac number, because 2729121 - 2¹ = 2729119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2729091 and 2729100.

It is not an unprimeable number, because it can be changed into a prime (2729101) 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, 4201 + ... + 4806.

It is an arithmetic number, because the mean of its divisors is an integer number (459408).

2^2729121 is an apocalyptic number.

It is an amenable number.

2729121 is a deficient number, since it is larger than the sum of its proper divisors (946143).

2729121 is a wasteful number, since it uses less digits than its factorization.

2729121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111.

The product of its digits is 504, while the sum is 24.

The square root of 2729121 is about 1652.0051452704. The cubic root of 2729121 is about 139.7464970326.

It can be divided in two parts, 2729 and 121, that added together give a triangular number (2850 = T₇₅).

The spelling of 2729121 in words is "two million, seven hundred twenty-nine thousand, one hundred twenty-one".