1216249 has 2 divisors, whose sum is σ = 1216250. Its totient is φ = 1216248.

The previous prime is 1216213. The next prime is 1216273. The reversal of 1216249 is 9426121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 75625 = 1068^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216249 - 2¹³ = 1208057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1216349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608124 + 608125.

It is an arithmetic number, because the mean of its divisors is an integer number (608125).

2^1216249 is an apocalyptic number.

It is an amenable number.

1216249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216249 is an equidigital number, since it uses as much as digits as its factorization.

1216249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 1216249 is about 1102.8367966295. The cubic root of 1216249 is about 106.7433508904.

It can be divided in two parts, 12 and 16249, that added together give a palindrome (16261).

The spelling of 1216249 in words is "one million, two hundred sixteen thousand, two hundred forty-nine".