40040222420 has 96 divisors (see below), whose sum is σ = 93576954240. Its totient is φ = 14268925440.

The previous prime is 40040222399. The next prime is 40040222447. The reversal of 40040222420 is 2422204004.

It is a super-2 number, since 2×40040222420² (a number of 22 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40040222392 and 40040222401.

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 31 ways as a sum of consecutive naturals, for example, 2896886 + ... + 2910674.

It is an arithmetic number, because the mean of its divisors is an integer number (974759940).

Almost surely, 2^40040222420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40040222420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46788477120).

40040222420 is an abundant number, since it is smaller than the sum of its proper divisors (53536731820).

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

40040222420 is a wasteful number, since it uses less digits than its factorization.

40040222420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073 (or 14071 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40040222420 its reverse (2422204004), we get a palindrome (42462426424).

The spelling of 40040222420 in words is "forty billion, forty million, two hundred twenty-two thousand, four hundred twenty".