123424045040 has 40 divisors (see below), whose sum is σ = 287895688080. Its totient is φ = 49208795136.

The previous prime is 123424045027. The next prime is 123424045097. The reversal of 123424045040 is 40540424321.

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

It is a junction number, because it is equal to n+sod(n) for n = 123424044994 and 123424045012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2488145 + ... + 2537264.

It is an arithmetic number, because the mean of its divisors is an integer number (7197392202).

Almost surely, 2^123424045040 is an apocalyptic number.

123424045040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123424045040 is an abundant number, since it is smaller than the sum of its proper divisors (164471643040).

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

123424045040 is a wasteful number, since it uses less digits than its factorization.

123424045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025729 (or 5025723 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 123424045040 its reverse (40540424321), we get a palindrome (163964469361).

The spelling of 123424045040 in words is "one hundred twenty-three billion, four hundred twenty-four million, forty-five thousand, forty".