12408921240 has 32 divisors (see below), whose sum is σ = 37226764080. Its totient is φ = 3309045632.

The previous prime is 12408921233. The next prime is 12408921253. The reversal of 12408921240 is 4212980421.

It is a congruent number.

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, 51703719 + ... + 51703958.

Almost surely, 2^12408921240 is an apocalyptic number.

12408921240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12408921240 is an abundant number, since it is smaller than the sum of its proper divisors (24817842840).

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

12408921240 is a wasteful number, since it uses less digits than its factorization.

12408921240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103407691 (or 103407687 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 12408921240 in words is "twelve billion, four hundred eight million, nine hundred twenty-one thousand, two hundred forty".