1249217 has 2 divisors, whose sum is σ = 1249218. Its totient is φ = 1249216.

The previous prime is 1249201. The next prime is 1249243. The reversal of 1249217 is 7129421.

It is an a-pointer prime, because the next prime (1249243) can be obtained adding 1249217 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168561 + 80656 = 1081^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249217 - 2⁴ = 1249201 is a prime.

It is a super-2 number, since 2×1249217² = 3121086226178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1249247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624608 + 624609.

It is an arithmetic number, because the mean of its divisors is an integer number (624609).

2^1249217 is an apocalyptic number.

It is an amenable number.

1249217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249217 is an equidigital number, since it uses as much as digits as its factorization.

1249217 is an evil number, because the sum of its binary digits is even.

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

The square root of 1249217 is about 1117.6837656511. The cubic root of 1249217 is about 107.6992375054.

The spelling of 1249217 in words is "one million, two hundred forty-nine thousand, two hundred seventeen".