20120461 has 4 divisors (see below), whose sum is σ = 20814300. Its totient is φ = 19426624.

The previous prime is 20120459. The next prime is 20120467. The reversal of 20120461 is 16402102.

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 13920361 + 6200100 = 3731^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120461 - 2¹ = 20120459 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 (20120467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346876 + ... + 346933.

It is an arithmetic number, because the mean of its divisors is an integer number (5203575).

Almost surely, 2^20120461 is an apocalyptic number.

It is an amenable number.

20120461 is a deficient number, since it is larger than the sum of its proper divisors (693839).

20120461 is an equidigital number, since it uses as much as digits as its factorization.

20120461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693838.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20120461 is about 4485.5836855419. The cubic root of 20120461 is about 271.9856402814.

Adding to 20120461 its reverse (16402102), we get a palindrome (36522563).

The spelling of 20120461 in words is "twenty million, one hundred twenty thousand, four hundred sixty-one".