123304355040 has 96 divisors (see below), whose sum is σ = 400938080256. Its totient is φ = 31820474880.

The previous prime is 123304355029. The next prime is 123304355051. The reversal of 123304355040 is 40553403321.

It is an interprime number because it is at equal distance from previous prime (123304355029) and next prime (123304355051).

It is a tau number, because it is divible by the number of its divisors (96).

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 = 123304354989 and 123304355007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4128412 + ... + 4158171.

It is an arithmetic number, because the mean of its divisors is an integer number (4176438336).

Almost surely, 2^123304355040 is an apocalyptic number.

123304355040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123304355040 is an abundant number, since it is smaller than the sum of its proper divisors (277633725216).

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

123304355040 is a wasteful number, since it uses less digits than its factorization.

123304355040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8286632 (or 8286624 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 123304355040 its reverse (40553403321), we get a palindrome (163857758361).

The spelling of 123304355040 in words is "one hundred twenty-three billion, three hundred four million, three hundred fifty-five thousand, forty".