4523121240 has 192 divisors, whose sum is σ = 15219912960. Its totient is φ = 1066452480.

The previous prime is 4523121223. The next prime is 4523121241. The reversal of 4523121240 is 421213254.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4523121240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4523121241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1805829 + ... + 1808331.

It is an arithmetic number, because the mean of its divisors is an integer number (79270380).

Almost surely, 2^4523121240 is an apocalyptic number.

4523121240 is a gapful number since it is divisible by the number (40) 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 4523121240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7609956480).

4523121240 is an abundant number, since it is smaller than the sum of its proper divisors (10696791720).

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

4523121240 is a wasteful number, since it uses less digits than its factorization.

4523121240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 4523121240 is about 67254.1540724437. The cubic root of 4523121240 is about 1653.7863751898.

Adding to 4523121240 its reverse (421213254), we get a palindrome (4944334494).

The spelling of 4523121240 in words is "four billion, five hundred twenty-three million, one hundred twenty-one thousand, two hundred forty".