123034134440 has 128 divisors (see below), whose sum is σ = 344508768000. Its totient is φ = 38584885248.

The previous prime is 123034134437. The next prime is 123034134451. The reversal of 123034134440 is 44431430321.

It is a happy number.

It is a super-2 number, since 2×123034134440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244457 + ... + 553016.

It is an arithmetic number, because the mean of its divisors is an integer number (2691474750).

Almost surely, 2^123034134440 is an apocalyptic number.

123034134440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123034134440 is an abundant number, since it is smaller than the sum of its proper divisors (221474633560).

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

123034134440 is a wasteful number, since it uses less digits than its factorization.

123034134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797539 (or 797535 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 123034134440 its reverse (44431430321), we get a palindrome (167465564761).

The spelling of 123034134440 in words is "one hundred twenty-three billion, thirty-four million, one hundred thirty-four thousand, four hundred forty".