120123501500 has 96 divisors (see below), whose sum is σ = 270309940992. Its totient is φ = 46605120000.

The previous prime is 120123501497. The next prime is 120123501521. The reversal of 120123501500 is 5105321021.

It is a happy number.

It is a super-2 number, since 2×120123501500² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3529565 + ... + 3563435.

It is an arithmetic number, because the mean of its divisors is an integer number (2815728552).

Almost surely, 2^120123501500 is an apocalyptic number.

120123501500 is a gapful number since it is divisible by the number (10) 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 120123501500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135154970496).

120123501500 is an abundant number, since it is smaller than the sum of its proper divisors (150186439492).

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

120123501500 is a wasteful number, since it uses less digits than its factorization.

120123501500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34104 (or 34092 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 120123501500 its reverse (5105321021), we get a palindrome (125228822521).

The spelling of 120123501500 in words is "one hundred twenty billion, one hundred twenty-three million, five hundred one thousand, five hundred".