40200004200420 has 48 divisors (see below), whose sum is σ = 125066679736320. Its totient is φ = 10720001119968.

The previous prime is 40200004200379. The next prime is 40200004200427. The reversal of 40200004200420 is 2400240000204.

40200004200420 is a `hidden beast` number, since 4 + 0 + 200 + 0 + 0 + 42 + 0 + 0 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40200004200393 and 40200004200402.

It is not an unprimeable number, because it can be changed into a prime (40200004200427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37222225572 + ... + 37222226651.

It is an arithmetic number, because the mean of its divisors is an integer number (2605555827840).

Almost surely, 2^{40200004200420} is an apocalyptic number.

It is an amenable number.

40200004200420 is an abundant number, since it is smaller than the sum of its proper divisors (84866675535900).

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

40200004200420 is a wasteful number, since it uses less digits than its factorization.

40200004200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74444452241 (or 74444452233 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40200004200420 its reverse (2400240000204), we get a palindrome (42600244200624).

The spelling of 40200004200420 in words is "forty trillion, two hundred billion, four million, two hundred thousand, four hundred twenty".