123334535040 has 128 divisors (see below), whose sum is σ = 394141831200. Its totient is φ = 32804462592.

The previous prime is 123334535039. The next prime is 123334535041. The reversal of 123334535040 is 40535433321.

It is an interprime number because it is at equal distance from previous prime (123334535039) and next prime (123334535041).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×123334535040² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123334534992 and 123334535010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123334535041) 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, 664314 + ... + 829446.

Almost surely, 2^123334535040 is an apocalyptic number.

123334535040 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 123334535040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197070915600).

123334535040 is an abundant number, since it is smaller than the sum of its proper divisors (270807296160).

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

123334535040 is a wasteful number, since it uses less digits than its factorization.

123334535040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165544 (or 165532 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 123334535040 its reverse (40535433321), we get a palindrome (163869968361).

The spelling of 123334535040 in words is "one hundred twenty-three billion, three hundred thirty-four million, five hundred thirty-five thousand, forty".