40122079538 has 6 divisors (see below), whose sum is σ = 60183544221. Its totient is φ = 20060898132.

The previous prime is 40122079519. The next prime is 40122079553. The reversal of 40122079538 is 83597022104.

It can be written as a sum of positive squares in 2 ways, for example, as 34334978209 + 5787101329 = 185297^2 + 76073^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=141637.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40122079495 and 40122079504.

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 2 ways as a sum of consecutive naturals, for example, 212456 + ... + 354092.

Almost surely, 2^40122079538 is an apocalyptic number.

40122079538 is a deficient number, since it is larger than the sum of its proper divisors (20061464683).

40122079538 is an frugal number, since it uses more digits than its factorization.

40122079538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283276 (or 141639 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 40122079538 in words is "forty billion, one hundred twenty-two million, seventy-nine thousand, five hundred thirty-eight".