12387427240 has 32 divisors (see below), whose sum is σ = 28017653760. Its totient is φ = 4929025600.

The previous prime is 12387427231. The next prime is 12387427291. The reversal of 12387427240 is 4272478321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12387427193 and 12387427202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803056 + ... + 818335.

It is an arithmetic number, because the mean of its divisors is an integer number (875551680).

Almost surely, 2^12387427240 is an apocalyptic number.

12387427240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12387427240 is an abundant number, since it is smaller than the sum of its proper divisors (15630226520).

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

12387427240 is a wasteful number, since it uses less digits than its factorization.

12387427240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621593 (or 1621589 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 12387427240 in words is "twelve billion, three hundred eighty-seven million, four hundred twenty-seven thousand, two hundred forty".