40344342420 has 48 divisors (see below), whose sum is σ = 113436852480. Its totient is φ = 10713472896.

The previous prime is 40344342413. The next prime is 40344342439. The reversal of 40344342420 is 2424344304.

It is a super-2 number, since 2×40344342420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392367 + ... + 1421046.

It is an arithmetic number, because the mean of its divisors is an integer number (2363267760).

Almost surely, 2^40344342420 is an apocalyptic number.

It is an amenable number.

40344342420 is an abundant number, since it is smaller than the sum of its proper divisors (73092510060).

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

40344342420 is a wasteful number, since it uses less digits than its factorization.

40344342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813664 (or 2813662 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 40344342420 its reverse (2424344304), we get a palindrome (42768686724).

The spelling of 40344342420 in words is "forty billion, three hundred forty-four million, three hundred forty-two thousand, four hundred twenty".