1241729 has 4 divisors (see below), whose sum is σ = 1244976. Its totient is φ = 1238484.

The previous prime is 1241699. The next prime is 1241741. The reversal of 1241729 is 9271421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1241729 - 2²⁰ = 193153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241698 and 1241707.

It is not an unprimeable number, because it can be changed into a prime (1241789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (311244).

2^1241729 is an apocalyptic number.

It is an amenable number.

1241729 is a deficient number, since it is larger than the sum of its proper divisors (3247).

1241729 is an equidigital number, since it uses as much as digits as its factorization.

1241729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246.

The product of its digits is 1008, while the sum is 26.

The square root of 1241729 is about 1114.3289460478. The cubic root of 1241729 is about 107.4836174783.

The spelling of 1241729 in words is "one million, two hundred forty-one thousand, seven hundred twenty-nine".