421211041040 has 40 divisors (see below), whose sum is σ = 1030858604160. Its totient is φ = 159616814976.

The previous prime is 421211040979. The next prime is 421211041057. The reversal of 421211041040 is 40140112124.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138554744 + ... + 138557783.

It is an arithmetic number, because the mean of its divisors is an integer number (25771465104).

Almost surely, 2^421211041040 is an apocalyptic number.

421211041040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421211041040 is an abundant number, since it is smaller than the sum of its proper divisors (609647563120).

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

421211041040 is a wasteful number, since it uses less digits than its factorization.

421211041040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277112559 (or 277112553 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 421211041040 its reverse (40140112124), we get a palindrome (461351153164).

The spelling of 421211041040 in words is "four hundred twenty-one billion, two hundred eleven million, forty-one thousand, forty".