20124255 has 8 divisors (see below), whose sum is σ = 32198832. Its totient is φ = 10732928.

The previous prime is 20124253. The next prime is 20124257. The reversal of 20124255 is 55242102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20124253) and next prime (20124257).

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 20124255 - 2¹ = 20124253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670794 + ... + 670823.

It is an arithmetic number, because the mean of its divisors is an integer number (4024854).

Almost surely, 2^20124255 is an apocalyptic number.

20124255 is a deficient number, since it is larger than the sum of its proper divisors (12074577).

20124255 is a wasteful number, since it uses less digits than its factorization.

20124255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341625.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20124255 is about 4486.0065760094. The cubic root of 20124255 is about 272.0027347981.

Adding to 20124255 its reverse (55242102), we get a palindrome (75366357).

The spelling of 20124255 in words is "twenty million, one hundred twenty-four thousand, two hundred fifty-five".