2123365420 has 48 divisors (see below), whose sum is σ = 4912651296. Its totient is φ = 764480000.

The previous prime is 2123365403. The next prime is 2123365423. The reversal of 2123365420 is 245633212.

It is not an unprimeable number, because it can be changed into a prime (2123365423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25561 + ... + 70000.

It is an arithmetic number, because the mean of its divisors is an integer number (102346902).

Almost surely, 2^2123365420 is an apocalyptic number.

2123365420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123365420 is an abundant number, since it is smaller than the sum of its proper divisors (2789285876).

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

2123365420 is a wasteful number, since it uses less digits than its factorization.

2123365420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95682 (or 95680 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2123365420 is about 46079.9893663182. The cubic root of 2123365420 is about 1285.3110664206.

Adding to 2123365420 its reverse (245633212), we get a palindrome (2368998632).

The spelling of 2123365420 in words is "two billion, one hundred twenty-three million, three hundred sixty-five thousand, four hundred twenty".