300561421 has 4 divisors (see below), whose sum is σ = 301296700. Its totient is φ = 299826144.

The previous prime is 300561419. The next prime is 300561431. The reversal of 300561421 is 124165003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124165003 = 67 ⋅1853209.

It can be written as a sum of positive squares in 2 ways, for example, as 286083396 + 14478025 = 16914^2 + 3805^2 .

It is a cyclic number.

It is not a de Polignac number, because 300561421 - 2¹ = 300561419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 300561392 and 300561401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300561431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367026 + ... + 367843.

It is an arithmetic number, because the mean of its divisors is an integer number (75324175).

Almost surely, 2^300561421 is an apocalyptic number.

It is an amenable number.

300561421 is a deficient number, since it is larger than the sum of its proper divisors (735279).

300561421 is an equidigital number, since it uses as much as digits as its factorization.

300561421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735278.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 300561421 is about 17336.7073286712. The cubic root of 300561421 is about 669.8502828757.

The spelling of 300561421 in words is "three hundred million, five hundred sixty-one thousand, four hundred twenty-one".