1204721 has 8 divisors (see below), whose sum is σ = 1400640. Its totient is φ = 1014768.

The previous prime is 1204711. The next prime is 1204729. The reversal of 1204721 is 1274021.

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 1204721 - 2¹⁸ = 942577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1204721.

It is not an unprimeable number, because it can be changed into a prime (1204729) 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, 1046 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (175080).

2^1204721 is an apocalyptic number.

It is an amenable number.

1204721 is a deficient number, since it is larger than the sum of its proper divisors (195919).

1204721 is an equidigital number, since it uses as much as digits as its factorization.

1204721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1204721 is about 1097.5978316305. The cubic root of 1204721 is about 106.4050304309.

Adding to 1204721 its reverse (1274021), we get a palindrome (2478742).

The spelling of 1204721 in words is "one million, two hundred four thousand, seven hundred twenty-one".