40042182020 has 24 divisors (see below), whose sum is σ = 84217382424. Its totient is φ = 15992339456.

The previous prime is 40042182001. The next prime is 40042182049. The reversal of 40042182020 is 2028124004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11702479684 + 28339702336 = 108178^2 + 168344^2 .

It is a super-2 number, since 2×40042182020² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519949 + ... + 1546068.

It is an arithmetic number, because the mean of its divisors is an integer number (3509057601).

Almost surely, 2^40042182020 is an apocalyptic number.

It is an amenable number.

40042182020 is an abundant number, since it is smaller than the sum of its proper divisors (44175200404).

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

40042182020 is a wasteful number, since it uses less digits than its factorization.

40042182020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066679 (or 3066677 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The spelling of 40042182020 in words is "forty billion, forty-two million, one hundred eighty-two thousand, twenty".