421224005040 has 80 divisors (see below), whose sum is σ = 1307074112736. Its totient is φ = 112216320000.

The previous prime is 421224005029. The next prime is 421224005077. The reversal of 421224005040 is 40500422124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 421224005040.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 614461 + ... + 1104540.

Almost surely, 2^421224005040 is an apocalyptic number.

421224005040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421224005040 is an abundant number, since it is smaller than the sum of its proper divisors (885850107696).

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

421224005040 is a wasteful number, since it uses less digits than its factorization.

421224005040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720038 (or 1720032 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 421224005040 its reverse (40500422124), we get a palindrome (461724427164).

The spelling of 421224005040 in words is "four hundred twenty-one billion, two hundred twenty-four million, five thousand, forty".