40000421400 has 96 divisors (see below), whose sum is σ = 124040788560. Its totient is φ = 10663383040.

The previous prime is 40000421333. The next prime is 40000421431. The reversal of 40000421400 is 412400004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40000421400.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2291104 + ... + 2308496.

Almost surely, 2^40000421400 is an apocalyptic number.

40000421400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000421400 is an abundant number, since it is smaller than the sum of its proper divisors (84040367160).

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

40000421400 is a wasteful number, since it uses less digits than its factorization.

40000421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21245 (or 21236 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 40000421400 its reverse (412400004), we get a palindrome (40412821404).

The spelling of 40000421400 in words is "forty billion, four hundred twenty-one thousand, four hundred".