20421301 has 8 divisors (see below), whose sum is σ = 21669120. Its totient is φ = 19178688.

The previous prime is 20421287. The next prime is 20421329. The reversal of 20421301 is 10312402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20421301 - 2¹¹ = 20419253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9330 + ... + 11308.

It is an arithmetic number, because the mean of its divisors is an integer number (2708640).

Almost surely, 2^20421301 is an apocalyptic number.

It is an amenable number.

20421301 is a deficient number, since it is larger than the sum of its proper divisors (1247819).

20421301 is a wasteful number, since it uses less digits than its factorization.

20421301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20421301 is about 4518.9933613583. The cubic root of 20421301 is about 273.3345110333.

Adding to 20421301 its reverse (10312402), we get a palindrome (30733703).

The spelling of 20421301 in words is "twenty million, four hundred twenty-one thousand, three hundred one".