1204021 has 16 divisors (see below), whose sum is σ = 1507968. Its totient is φ = 936000.

The previous prime is 1204019. The next prime is 1204037.

1204021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1204021 - 2¹ = 1204019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203989 and 1204007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9126 + ... + 9256.

It is an arithmetic number, because the mean of its divisors is an integer number (94248).

2^1204021 is an apocalyptic number.

It is an amenable number.

1204021 is a deficient number, since it is larger than the sum of its proper divisors (303947).

1204021 is a wasteful number, since it uses less digits than its factorization.

1204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1204021 is about 1097.2789071152. The cubic root of 1204021 is about 106.3844176495.

The spelling of 1204021 in words is "one million, two hundred four thousand, twenty-one".