123452334540 has 36 divisors (see below), whose sum is σ = 374472081984. Its totient is φ = 32920622496.

The previous prime is 123452334539. The next prime is 123452334559. The reversal of 123452334540 is 45433254321.

123452334540 is a `hidden beast` number, since 1 + 2 + 34 + 52 + 3 + 34 + 540 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 123452334495 and 123452334504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342922972 + ... + 342923331.

Almost surely, 2^123452334540 is an apocalyptic number.

123452334540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123452334540 is an abundant number, since it is smaller than the sum of its proper divisors (251019747444).

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

123452334540 is a wasteful number, since it uses less digits than its factorization.

123452334540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685846318 (or 685846313 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 123452334540 its reverse (45433254321), we get a palindrome (168885588861).

The spelling of 123452334540 in words is "one hundred twenty-three billion, four hundred fifty-two million, three hundred thirty-four thousand, five hundred forty".