12540103020 has 48 divisors (see below), whose sum is σ = 39013655520. Its totient is φ = 3344027328.

The previous prime is 12540103013. The next prime is 12540103073. The reversal of 12540103020 is 2030104521.

12540103020 is a `hidden beast` number, since 1 + 2 + 540 + 103 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12540102984 and 12540103002.

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 15 ways as a sum of consecutive naturals, for example, 11610667 + ... + 11611746.

It is an arithmetic number, because the mean of its divisors is an integer number (812784490).

Almost surely, 2^12540103020 is an apocalyptic number.

12540103020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12540103020 is an abundant number, since it is smaller than the sum of its proper divisors (26473552500).

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

12540103020 is a wasteful number, since it uses less digits than its factorization.

12540103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23222431 (or 23222423 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12540103020 its reverse (2030104521), we get a palindrome (14570207541).

The spelling of 12540103020 in words is "twelve billion, five hundred forty million, one hundred three thousand, twenty".