1220075 has 12 divisors (see below), whose sum is σ = 1554960. Its totient is φ = 948960.

The previous prime is 1220071. The next prime is 1220077. The reversal of 1220075 is 5700221.

It is not a de Polignac number, because 1220075 - 2² = 1220071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220071) 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 11 ways as a sum of consecutive naturals, for example, 266 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (129580).

2^1220075 is an apocalyptic number.

1220075 is a deficient number, since it is larger than the sum of its proper divisors (334885).

1220075 is a wasteful number, since it uses less digits than its factorization.

1220075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 1220075 is about 1104.5700521017. The cubic root of 1220075 is about 106.8551625801.

Adding to 1220075 its reverse (5700221), we get a palindrome (6920296).

The spelling of 1220075 in words is "one million, two hundred twenty thousand, seventy-five".