304342132421 has 4 divisors (see below), whose sum is σ = 317574399072. Its totient is φ = 291109865772.

The previous prime is 304342132349. The next prime is 304342132459. The reversal of 304342132421 is 124231243403.

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: 124231243403 = 313 ⋅396904931.

It is a cyclic number.

It is not a de Polignac number, because 304342132421 - 2¹⁸ = 304341870277 is a prime.

It is a super-2 number, since 2×304342132421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304342132021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6616133291 + ... + 6616133336.

It is an arithmetic number, because the mean of its divisors is an integer number (79393599768).

Almost surely, 2^304342132421 is an apocalyptic number.

It is an amenable number.

304342132421 is a deficient number, since it is larger than the sum of its proper divisors (13232266651).

304342132421 is a wasteful number, since it uses less digits than its factorization.

304342132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232266650.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 304342132421 its reverse (124231243403), we get a palindrome (428573375824).

The spelling of 304342132421 in words is "three hundred four billion, three hundred forty-two million, one hundred thirty-two thousand, four hundred twenty-one".