123423532000 has 96 divisors (see below), whose sum is σ = 304589769120. Its totient is φ = 49151564800.

The previous prime is 123423531997. The next prime is 123423532003. The reversal of 123423532000 is 235324321.

It is an interprime number because it is at equal distance from previous prime (123423531997) and next prime (123423532003).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123423532003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840036 + ... + 975964.

It is an arithmetic number, because the mean of its divisors is an integer number (3172810095).

Almost surely, 2^123423532000 is an apocalyptic number.

123423532000 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 123423532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152294884560).

123423532000 is an abundant number, since it is smaller than the sum of its proper divisors (181166237120).

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

123423532000 is a wasteful number, since it uses less digits than its factorization.

123423532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136181 (or 136163 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 123423532000 its reverse (235324321), we get a palindrome (123658856321).

The spelling of 123423532000 in words is "one hundred twenty-three billion, four hundred twenty-three million, five hundred thirty-two thousand".