1023121 has 8 divisors (see below), whose sum is σ = 1123488. Its totient is φ = 924000.

The previous prime is 1023107. The next prime is 1023133. The reversal of 1023121 is 1213201.

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

It is not a de Polignac number, because 1023121 - 2¹¹ = 1021073 is a prime.

It is a Duffinian number.

1023121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1023098 and 1023107.

It is not an unprimeable number, because it can be changed into a prime (1023101) 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, 2926 + ... + 3256.

It is an arithmetic number, because the mean of its divisors is an integer number (140436).

It is a Poulet number, since it divides 2^1023120-1.

2^1023121 is an apocalyptic number.

1023121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1023121 is a deficient number, since it is larger than the sum of its proper divisors (100367).

1023121 is a wasteful number, since it uses less digits than its factorization.

1023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1023121 is about 1011.4944389368. The cubic root of 1023121 is about 100.7648353552.

Adding to 1023121 its reverse (1213201), we get a palindrome (2236322).

It can be divided in two parts, 102 and 3121, that added together give a palindrome (3223).

The spelling of 1023121 in words is "one million, twenty-three thousand, one hundred twenty-one".