302403013421 has 2 divisors, whose sum is σ = 302403013422. Its totient is φ = 302403013420.

The previous prime is 302403013403. The next prime is 302403013433. The reversal of 302403013421 is 124310304203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291735015625 + 10667997796 = 540125^2 + 103286^2 .

It is a cyclic number.

It is not a de Polignac number, because 302403013421 - 2⁶ = 302403013357 is a prime.

It is a super-2 number, since 2×302403013421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302403013441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151201506710 + 151201506711.

It is an arithmetic number, because the mean of its divisors is an integer number (151201506711).

Almost surely, 2^302403013421 is an apocalyptic number.

It is an amenable number.

302403013421 is a deficient number, since it is larger than the sum of its proper divisors (1).

302403013421 is an equidigital number, since it uses as much as digits as its factorization.

302403013421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 302403013421 its reverse (124310304203), we get a palindrome (426713317624).

The spelling of 302403013421 in words is "three hundred two billion, four hundred three million, thirteen thousand, four hundred twenty-one".