302002021 has 4 divisors (see below), whose sum is σ = 302148000. Its totient is φ = 301856044.

The previous prime is 302002013. The next prime is 302002039. The reversal of 302002021 is 120200203.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120200203 = 3329 ⋅36107.

It is a cyclic number.

It is not a de Polignac number, because 302002021 - 2³ = 302002013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 302001989 and 302002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302702021) 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, 69841 + ... + 74038.

It is an arithmetic number, because the mean of its divisors is an integer number (75537000).

Almost surely, 2^302002021 is an apocalyptic number.

It is an amenable number.

302002021 is a deficient number, since it is larger than the sum of its proper divisors (145979).

302002021 is a wasteful number, since it uses less digits than its factorization.

302002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145978.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 302002021 is about 17378.2053446264. The cubic root of 302002021 is about 670.9187818094.

Adding to 302002021 its reverse (120200203), we get a palindrome (422202224).

It can be divided in two parts, 30200202 and 1, that added together give a palindrome (30200203).

The spelling of 302002021 in words is "three hundred two million, two thousand, twenty-one".