123540524812 has 12 divisors (see below), whose sum is σ = 221468989896. Its totient is φ = 60263670560.

The previous prime is 123540524803. The next prime is 123540524819. The reversal of 123540524812 is 218425045321.

It is a super-2 number, since 2×123540524812² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123540524819) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 376647778 + ... + 376648105.

It is an arithmetic number, because the mean of its divisors is an integer number (18455749158).

Almost surely, 2^123540524812 is an apocalyptic number.

It is an amenable number.

123540524812 is a deficient number, since it is larger than the sum of its proper divisors (97928465084).

123540524812 is a wasteful number, since it uses less digits than its factorization.

123540524812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753295928 (or 753295926 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 123540524812 in words is "one hundred twenty-three billion, five hundred forty million, five hundred twenty-four thousand, eight hundred twelve".