1602021 has 4 divisors (see below), whose sum is σ = 2136032. Its totient is φ = 1068012.

The previous prime is 1602011. The next prime is 1602059. The reversal of 1602021 is 1202061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1602021 - 2¹⁴ = 1585637 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1601988 and 1602006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1602011) 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, 267001 + ... + 267006.

It is an arithmetic number, because the mean of its divisors is an integer number (534008).

2^1602021 is an apocalyptic number.

It is an amenable number.

1602021 is a deficient number, since it is larger than the sum of its proper divisors (534011).

1602021 is an equidigital number, since it uses as much as digits as its factorization.

1602021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534010.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1602021 is about 1265.7096823522. The cubic root of 1602021 is about 117.0099341408.

Adding to 1602021 its reverse (1202061), we get a palindrome (2804082).

The spelling of 1602021 in words is "one million, six hundred two thousand, twenty-one".