1227245 has 8 divisors (see below), whose sum is σ = 1487616. Its totient is φ = 971856.

The previous prime is 1227241. The next prime is 1227271. The reversal of 1227245 is 5427221.

It is a happy number.

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 1227245 - 2² = 1227241 is a prime.

It is a super-2 number, since 2×1227245² = 3012260580050, which contains 22 as substring.

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 1227245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (185952).

2^1227245 is an apocalyptic number.

It is an amenable number.

1227245 is a deficient number, since it is larger than the sum of its proper divisors (260371).

1227245 is a wasteful number, since it uses less digits than its factorization.

1227245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its digits is 1120, while the sum is 23.

The square root of 1227245 is about 1107.8109044417. The cubic root of 1227245 is about 107.0640720284.

The spelling of 1227245 in words is "one million, two hundred twenty-seven thousand, two hundred forty-five".