123111424440 has 48 divisors (see below), whose sum is σ = 400112130600. Its totient is φ = 32829713088.

The previous prime is 123111424427. The next prime is 123111424441. The reversal of 123111424440 is 44424111321.

123111424440 is a `hidden beast` number, since 1 + 231 + 1 + 1 + 424 + 4 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111424441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170987730 + ... + 170988449.

Almost surely, 2^123111424440 is an apocalyptic number.

123111424440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123111424440 is an abundant number, since it is smaller than the sum of its proper divisors (277000706160).

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

123111424440 is a wasteful number, since it uses less digits than its factorization.

123111424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341976196 (or 341976189 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 123111424440 its reverse (44424111321), we get a palindrome (167535535761).

The spelling of 123111424440 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred twenty-four thousand, four hundred forty".