1021018 has 8 divisors (see below), whose sum is σ = 1556820. Its totient is φ = 502080.

The previous prime is 1021001. The next prime is 1021019. The reversal of 1021018 is 8101201.

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 34969 = 993^2 + 187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1020989 and 1021007.

It is not an unprimeable number, because it can be changed into a prime (1021019) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4063 + ... + 4306.

2^1021018 is an apocalyptic number.

1021018 is a deficient number, since it is larger than the sum of its proper divisors (535802).

1021018 is an equidigital number, since it uses as much as digits as its factorization.

1021018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8432.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1021018 is about 1010.4543532491. The cubic root of 1021018 is about 100.6957481193.

Adding to 1021018 its reverse (8101201), we get a palindrome (9122219).

The spelling of 1021018 in words is "one million, twenty-one thousand, eighteen".