421566665124 has 96 divisors (see below), whose sum is σ = 1140084086400. Its totient is φ = 120008770560.

The previous prime is 421566665089. The next prime is 421566665129.

It is a happy number.

421566665124 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (421566665129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346569 + ... + 1629840.

It is an arithmetic number, because the mean of its divisors is an integer number (11875875900).

Almost surely, 2^421566665124 is an apocalyptic number.

421566665124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421566665124 is an abundant number, since it is smaller than the sum of its proper divisors (718517421276).

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

421566665124 is a wasteful number, since it uses less digits than its factorization.

421566665124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976493 (or 2976491 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 421566665124 in words is "four hundred twenty-one billion, five hundred sixty-six million, six hundred sixty-five thousand, one hundred twenty-four".