2123050520 has 64 divisors (see below), whose sum is σ = 4962565440. Its totient is φ = 816793600.

The previous prime is 2123050499. The next prime is 2123050537. The reversal of 2123050520 is 250503212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2123050492 and 2123050501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107324 + ... + 125556.

It is an arithmetic number, because the mean of its divisors is an integer number (77540085).

Almost surely, 2^2123050520 is an apocalyptic number.

2123050520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123050520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481282720).

2123050520 is an abundant number, since it is smaller than the sum of its proper divisors (2839514920).

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

2123050520 is a wasteful number, since it uses less digits than its factorization.

2123050520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18356 (or 18352 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2123050520 is about 46076.5723551568. The cubic root of 2123050520 is about 1285.2475250787.

Adding to 2123050520 its reverse (250503212), we get a palindrome (2373553732).

The spelling of 2123050520 in words is "two billion, one hundred twenty-three million, fifty thousand, five hundred twenty".