20123120 has 20 divisors (see below), whose sum is σ = 46786440. Its totient is φ = 8049216.

The previous prime is 20123119. The next prime is 20123141. The reversal of 20123120 is 2132102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125690 + ... + 125849.

It is an arithmetic number, because the mean of its divisors is an integer number (2339322).

Almost surely, 2^20123120 is an apocalyptic number.

20123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123120 is an abundant number, since it is smaller than the sum of its proper divisors (26663320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123120 is a wasteful number, since it uses less digits than its factorization.

20123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251552 (or 251546 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20123120 is about 4485.8800697299. The cubic root of 20123120 is about 271.9976210865.

Adding to 20123120 its reverse (2132102), we get a palindrome (22255222).

The spelling of 20123120 in words is "twenty million, one hundred twenty-three thousand, one hundred twenty".