123012204533040 has 40 divisors (see below), whose sum is σ = 381337834053168. Its totient is φ = 32803254542080.

The previous prime is 123012204533033. The next prime is 123012204533041. The reversal of 123012204533040 is 40335402210321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123012204532989 and 123012204533007.

It is not an unprimeable number, because it can be changed into a prime (123012204533041) 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 7 ways as a sum of consecutive naturals, for example, 256275425871 + ... + 256275426350.

Almost surely, 2^{123012204533040} is an apocalyptic number.

123012204533040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123012204533040 is an abundant number, since it is smaller than the sum of its proper divisors (258325629520128).

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

123012204533040 is a wasteful number, since it uses less digits than its factorization.

123012204533040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512550852237 (or 512550852231 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 123012204533040 its reverse (40335402210321), we get a palindrome (163347606743361).

The spelling of 123012204533040 in words is "one hundred twenty-three trillion, twelve billion, two hundred four million, five hundred thirty-three thousand, forty".