1220242 has 16 divisors (see below), whose sum is σ = 1959552.
Its totient is φ = 568480.
The previous prime is 1220239. The next prime is 1220249. The reversal of 1220242 is 2420221.
It is not an unprimeable number, because it can be changed into a prime (1220249) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563 + ... + 2209.
It is an arithmetic number, because the mean of its divisors is an integer number (122472).
21220242 is an apocalyptic number.
1220242 is a deficient number, since it is larger than the sum of its proper divisors (739310).
1220242 is a wasteful number, since it uses less digits than its factorization.
1220242 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 713.
The product of its (nonzero) digits is 64, while the sum is 13.
The square root of 1220242 is about 1104.6456445395.
The cubic root of 1220242 is about 106.8600376897.
Adding to 1220242 its reverse (2420221), we get a palindrome (3640463).
The spelling of 1220242 in words is "one million, two hundred twenty thousand, two hundred forty-two".