123540325245 has 24 divisors (see below), whose sum is σ = 214248650616. Its totient is φ = 65853685248.

The previous prime is 123540325231. The next prime is 123540325261. The reversal of 123540325245 is 542523045321.

123540325245 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 403 + 2 + 5 + 245 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12493427076 + 111046898169 = 111774^2 + 333237^2 .

It is not a de Polignac number, because 123540325245 - 2¹⁰ = 123540324221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631464 + ... + 803633.

It is an arithmetic number, because the mean of its divisors is an integer number (8927027109).

Almost surely, 2^123540325245 is an apocalyptic number.

123540325245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123540325245 is a deficient number, since it is larger than the sum of its proper divisors (90708325371).

123540325245 is a wasteful number, since it uses less digits than its factorization.

123540325245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437021 (or 1437018 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 123540325245 in words is "one hundred twenty-three billion, five hundred forty million, three hundred twenty-five thousand, two hundred forty-five".