303240052421 has 4 divisors (see below), whose sum is σ = 319200055200. Its totient is φ = 287280049644.

The previous prime is 303240052391. The next prime is 303240052447. The reversal of 303240052421 is 124250042303.

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: 124250042303 = 15017 ⋅8273959.

It is a cyclic number.

It is not a de Polignac number, because 303240052421 - 2³⁴ = 286060183237 is a prime.

It is a super-2 number, since 2×303240052421² (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 (303240052471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7980001361 + ... + 7980001398.

It is an arithmetic number, because the mean of its divisors is an integer number (79800013800).

Almost surely, 2^303240052421 is an apocalyptic number.

It is an amenable number.

303240052421 is a deficient number, since it is larger than the sum of its proper divisors (15960002779).

303240052421 is a wasteful number, since it uses less digits than its factorization.

303240052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15960002778.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 303240052421 its reverse (124250042303), we get a palindrome (427490094724).

The spelling of 303240052421 in words is "three hundred three billion, two hundred forty million, fifty-two thousand, four hundred twenty-one".