20420054 has 8 divisors (see below), whose sum is σ = 30663360. Its totient is φ = 10198936.

The previous prime is 20420053. The next prime is 20420063. The reversal of 20420054 is 45002402.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420051) 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, 3014 + ... + 7065.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^20420054 is an apocalyptic number.

20420054 is a deficient number, since it is larger than the sum of its proper divisors (10243306).

20420054 is a wasteful number, since it uses less digits than its factorization.

20420054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20420054 is about 4518.8553860463. The cubic root of 20420054 is about 273.3289473154.

Adding to 20420054 its reverse (45002402), we get a palindrome (65422456).

The spelling of 20420054 in words is "twenty million, four hundred twenty thousand, fifty-four".