12420134201987 has 8 divisors (see below), whose sum is σ = 12964952630304. Its totient is φ = 11875716823168.

The previous prime is 12420134201963. The next prime is 12420134202013. The reversal of 12420134201987 is 78910243102421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12420134201987 - 2¹⁰ = 12420134200963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420134201947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100199078 + ... + 100322955.

It is an arithmetic number, because the mean of its divisors is an integer number (1620619078788).

Almost surely, 2^{12420134201987} is an apocalyptic number.

12420134201987 is a deficient number, since it is larger than the sum of its proper divisors (544818428317).

12420134201987 is a wasteful number, since it uses less digits than its factorization.

12420134201987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200524749.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 12420134201987 in words is "twelve trillion, four hundred twenty billion, one hundred thirty-four million, two hundred one thousand, nine hundred eighty-seven".