1020121 has 8 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 982560.

The previous prime is 1020113. The next prime is 1020137. The reversal of 1020121 is 1210201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020121 - 2³ = 1020113 is a prime.

It is a Duffinian number.

1020121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1020101) 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 7 ways as a sum of consecutive naturals, for example, 5610 + ... + 5788.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^1020121 is an apocalyptic number.

It is an amenable number.

1020121 is a deficient number, since it is larger than the sum of its proper divisors (38279).

1020121 is a wasteful number, since it uses less digits than its factorization.

1020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1020121 is about 1010.0103959861. The cubic root of 1020121 is about 100.6662512348. Note that the first 3 decimals are identical.

Adding to 1020121 its reverse (1210201), we get a palindrome (2230322).

The spelling of 1020121 in words is "one million, twenty thousand, one hundred twenty-one".