123430012240 has 20 divisors (see below), whose sum is σ = 286974778644. Its totient is φ = 49372004864.

The previous prime is 123430012213. The next prime is 123430012259. The reversal of 123430012240 is 42210034321.

It can be written as a sum of positive squares in 2 ways, for example, as 44027789584 + 79402222656 = 209828^2 + 281784^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771437497 + ... + 771437656.

Almost surely, 2^123430012240 is an apocalyptic number.

123430012240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123430012240 is an abundant number, since it is smaller than the sum of its proper divisors (163544766404).

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

123430012240 is a wasteful number, since it uses less digits than its factorization.

123430012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542875166 (or 1542875160 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 123430012240 its reverse (42210034321), we get a palindrome (165640046561).

The spelling of 123430012240 in words is "one hundred twenty-three billion, four hundred thirty million, twelve thousand, two hundred forty".