20024121 has 8 divisors (see below), whose sum is σ = 28752640. Its totient is φ = 12322512.

The previous prime is 20024117. The next prime is 20024129. The reversal of 20024121 is 12142002.

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

It is not a de Polignac number, because 20024121 - 2² = 20024117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20024097 and 20024106.

It is not an unprimeable number, because it can be changed into a prime (20024129) 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, 256681 + ... + 256758.

It is an arithmetic number, because the mean of its divisors is an integer number (3594080).

Almost surely, 2^20024121 is an apocalyptic number.

It is an amenable number.

20024121 is a deficient number, since it is larger than the sum of its proper divisors (8728519).

20024121 is a wasteful number, since it uses less digits than its factorization.

20024121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513455.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20024121 is about 4474.8319521519. The cubic root of 20024121 is about 271.5508419314.

Adding to 20024121 its reverse (12142002), we get a palindrome (32166123).

The spelling of 20024121 in words is "twenty million, twenty-four thousand, one hundred twenty-one".