302421021 has 64 divisors (see below), whose sum is σ = 492687360. Its totient is φ = 161441280.

The previous prime is 302421011. The next prime is 302421059. The reversal of 302421021 is 120124203.

It is not a de Polignac number, because 302421021 - 2⁶ = 302420957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302421011) 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 63 ways as a sum of consecutive naturals, for example, 3397945 + ... + 3398033.

It is an arithmetic number, because the mean of its divisors is an integer number (7698240).

Almost surely, 2^302421021 is an apocalyptic number.

It is an amenable number.

302421021 is a deficient number, since it is larger than the sum of its proper divisors (190266339).

302421021 is a wasteful number, since it uses less digits than its factorization.

302421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 302421021 is about 17390.2564960957. The cubic root of 302421021 is about 671.2289177722.

Adding to 302421021 its reverse (120124203), we get a palindrome (422545224).

The spelling of 302421021 in words is "three hundred two million, four hundred twenty-one thousand, twenty-one".