4123212500 has 144 divisors (see below), whose sum is σ = 9953362944. Its totient is φ = 1482000000.

The previous prime is 4123212491. The next prime is 4123212517. The reversal of 4123212500 is 52123214.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21587405 + ... + 21587595.

It is an arithmetic number, because the mean of its divisors is an integer number (69120576).

Almost surely, 2^4123212500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4123212500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4976681472).

4123212500 is an abundant number, since it is smaller than the sum of its proper divisors (5830150444).

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

4123212500 is a wasteful number, since it uses less digits than its factorization.

4123212500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4123212500 is about 64212.2457168413. The cubic root of 4123212500 is about 1603.5354762714.

Adding to 4123212500 its reverse (52123214), we get a palindrome (4175335714).

The spelling of 4123212500 in words is "four billion, one hundred twenty-three million, two hundred twelve thousand, five hundred".