123051401500 has 96 divisors (see below), whose sum is σ = 275840877312. Its totient is φ = 47927880000.

The previous prime is 123051401477. The next prime is 123051401509. The reversal of 123051401500 is 5104150321.

It is a happy number.

It is a super-2 number, since 2×123051401500² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123051401509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7107855 + ... + 7125145.

It is an arithmetic number, because the mean of its divisors is an integer number (2873342472).

Almost surely, 2^123051401500 is an apocalyptic number.

123051401500 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 123051401500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137920438656).

123051401500 is an abundant number, since it is smaller than the sum of its proper divisors (152789475812).

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

123051401500 is a wasteful number, since it uses less digits than its factorization.

123051401500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17684 (or 17672 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 123051401500 its reverse (5104150321), we get a palindrome (128155551821).

The spelling of 123051401500 in words is "one hundred twenty-three billion, fifty-one million, four hundred one thousand, five hundred".