1216741 has 8 divisors (see below), whose sum is σ = 1356480. Its totient is φ = 1084608.

The previous prime is 1216729. The next prime is 1216751. The reversal of 1216741 is 1476121.

1216741 = 244² + 245² + ... + 262².

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 1216741 - 2¹⁹ = 692453 is a prime.

It is a super-2 number, since 2×1216741² = 2960917322162, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216711) 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, 1561 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (169560).

2^1216741 is an apocalyptic number.

It is an amenable number.

1216741 is a deficient number, since it is larger than the sum of its proper divisors (139739).

1216741 is a wasteful number, since it uses less digits than its factorization.

1216741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803.

The product of its digits is 336, while the sum is 22.

The square root of 1216741 is about 1103.0598351857. The cubic root of 1216741 is about 106.7577423099.

The spelling of 1216741 in words is "one million, two hundred sixteen thousand, seven hundred forty-one".