1020122 has 4 divisors (see below), whose sum is σ = 1530186.
Its totient is φ = 510060.
The previous prime is 1020113. The next prime is 1020137. The reversal of 1020122 is 2210201.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2210201 = 7 ⋅315743.
It can be written as a sum of positive squares in only one way, i.e., 844561 + 175561 = 919^2 + 419^2
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255029 + ... + 255032.
21020122 is an apocalyptic number.
1020122 is a deficient number, since it is larger than the sum of its proper divisors (510064).
1020122 is an equidigital number, since it uses as much as digits as its factorization.
1020122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 510063.
The product of its (nonzero) digits is 8, while the sum is 8.
The square root of 1020122 is about 1010.0108910304.
The cubic root of 1020122 is about 100.6662841284.
Note that the first 3 decimals are identical.
Adding to 1020122 its reverse (2210201), we get a palindrome (3230323).
It can be divided in two parts, 10201 and 22, that multiplied together give a palindrome (224422).
The spelling of 1020122 in words is "one million, twenty thousand, one hundred twenty-two".