301021421 has 4 divisors (see below), whose sum is σ = 311401500. Its totient is φ = 290641344.

The previous prime is 301021393. The next prime is 301021429. The reversal of 301021421 is 124120103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88153321 + 212868100 = 9389^2 + 14590^2 .

It is a cyclic number.

It is not a de Polignac number, because 301021421 - 2²² = 296827117 is a prime.

It is a super-2 number, since 2×301021421² = 181227791801718482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 301021396 and 301021405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301021429) 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, 5189996 + ... + 5190053.

It is an arithmetic number, because the mean of its divisors is an integer number (77850375).

Almost surely, 2^301021421 is an apocalyptic number.

It is an amenable number.

301021421 is a deficient number, since it is larger than the sum of its proper divisors (10380079).

301021421 is a wasteful number, since it uses less digits than its factorization.

301021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380078.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 301021421 is about 17349.9689048713. The cubic root of 301021421 is about 670.1918370996.

Adding to 301021421 its reverse (124120103), we get a palindrome (425141524).

The spelling of 301021421 in words is "three hundred one million, twenty-one thousand, four hundred twenty-one".