12420389858 has 16 divisors (see below), whose sum is σ = 19491058944. Its totient is φ = 5929815840.

The previous prime is 12420389831. The next prime is 12420389869. The reversal of 12420389858 is 85898302421.

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, 1607510 + ... + 1615217.

It is an arithmetic number, because the mean of its divisors is an integer number (1218191184).

Almost surely, 2^12420389858 is an apocalyptic number.

12420389858 is a deficient number, since it is larger than the sum of its proper divisors (7070669086).

12420389858 is a wasteful number, since it uses less digits than its factorization.

12420389858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222817.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 12420389858 in words is "twelve billion, four hundred twenty million, three hundred eighty-nine thousand, eight hundred fifty-eight".