20424061 has 4 divisors (see below), whose sum is σ = 23341792. Its totient is φ = 17506332.

The previous prime is 20424049. The next prime is 20424067. The reversal of 20424061 is 16042402.

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.

It is a cyclic number.

It is not a de Polignac number, because 20424061 - 2¹³ = 20415869 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 (20424067) 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, 1458855 + ... + 1458868.

It is an arithmetic number, because the mean of its divisors is an integer number (5835448).

Almost surely, 2^20424061 is an apocalyptic number.

It is an amenable number.

20424061 is a deficient number, since it is larger than the sum of its proper divisors (2917731).

20424061 is an equidigital number, since it uses as much as digits as its factorization.

20424061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917730.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20424061 is about 4519.2987287853. The cubic root of 20424061 is about 273.3468244712.

Adding to 20424061 its reverse (16042402), we get a palindrome (36466463).

The spelling of 20424061 in words is "twenty million, four hundred twenty-four thousand, sixty-one".