123040322152 has 64 divisors (see below), whose sum is σ = 262709568000. Its totient is φ = 53476674240.

The previous prime is 123040322143. The next prime is 123040322183. The reversal of 123040322152 is 251223040321.

It is a super-2 number, since 2×123040322152² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6667963 + ... + 6686389.

It is an arithmetic number, because the mean of its divisors is an integer number (4104837000).

Almost surely, 2^123040322152 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 123040322152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131354784000).

123040322152 is an abundant number, since it is smaller than the sum of its proper divisors (139669245848).

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

123040322152 is a wasteful number, since it uses less digits than its factorization.

123040322152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21766 (or 21762 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 123040322152 its reverse (251223040321), we get a palindrome (374263362473).

The spelling of 123040322152 in words is "one hundred twenty-three billion, forty million, three hundred twenty-two thousand, one hundred fifty-two".