302404134421 has 4 divisors (see below), whose sum is σ = 304152135372. Its totient is φ = 300656133472.

The previous prime is 302404134379. The next prime is 302404134443. The reversal of 302404134421 is 124431404203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124431404203 = 81971 ⋅1517993.

It can be written as a sum of positive squares in 2 ways, for example, as 150334552900 + 152069581521 = 387730^2 + 389961^2 .

It is a cyclic number.

It is not a de Polignac number, because 302404134421 - 2⁹ = 302404133909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 302404134421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302404134491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874000216 + ... + 874000561.

It is an arithmetic number, because the mean of its divisors is an integer number (76038033843).

Almost surely, 2^302404134421 is an apocalyptic number.

It is an amenable number.

302404134421 is a deficient number, since it is larger than the sum of its proper divisors (1748000951).

302404134421 is a wasteful number, since it uses less digits than its factorization.

302404134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748000950.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 302404134421 its reverse (124431404203), we get a palindrome (426835538624).

The spelling of 302404134421 in words is "three hundred two billion, four hundred four million, one hundred thirty-four thousand, four hundred twenty-one".