12801129420 has 48 divisors (see below), whose sum is σ = 36030855168. Its totient is φ = 3395759040.

The previous prime is 12801129391. The next prime is 12801129431. The reversal of 12801129420 is 2492110821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 547054 + ... + 569973.

It is an arithmetic number, because the mean of its divisors is an integer number (750642816).

Almost surely, 2^12801129420 is an apocalyptic number.

12801129420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12801129420 is an abundant number, since it is smaller than the sum of its proper divisors (23229725748).

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

12801129420 is a wasteful number, since it uses less digits than its factorization.

12801129420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117230 (or 1117228 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 12801129420 in words is "twelve billion, eight hundred one million, one hundred twenty-nine thousand, four hundred twenty".