40042622420 has 24 divisors (see below), whose sum is σ = 84162613248. Its totient is φ = 16003124000.

The previous prime is 40042622419. The next prime is 40042622429. The reversal of 40042622420 is 2422624004.

It is a happy number.

It is a super-2 number, since 2×40042622420² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40042622420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042622429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846716 + ... + 892755.

It is an arithmetic number, because the mean of its divisors is an integer number (3506775552).

Almost surely, 2^40042622420 is an apocalyptic number.

It is an amenable number.

40042622420 is an abundant number, since it is smaller than the sum of its proper divisors (44119990828).

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

40042622420 is a wasteful number, since it uses less digits than its factorization.

40042622420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740631 (or 1740629 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The spelling of 40042622420 in words is "forty billion, forty-two million, six hundred twenty-two thousand, four hundred twenty".