1245222 has 48 divisors (see below), whose sum is σ = 3107520. Its totient is φ = 356400.

The previous prime is 1245217. The next prime is 1245227. The reversal of 1245222 is 2225421.

It is an interprime number because it is at equal distance from previous prime (1245217) and next prime (1245227).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 1 + 2⁴ + 4² + 5 + 2¹⁶ + 2¹⁷ + 2²⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 1245195 and 1245204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3597 + ... + 3927.

It is an arithmetic number, because the mean of its divisors is an integer number (64740).

2^1245222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553760).

1245222 is an abundant number, since it is smaller than the sum of its proper divisors (1862298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245222 is a wasteful number, since it uses less digits than its factorization.

1245222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 366 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 1245222 is about 1115.8951563655. The cubic root of 1245222 is about 107.5843073995.

The spelling of 1245222 in words is "one million, two hundred forty-five thousand, two hundred twenty-two".