42379502978 has 18 divisors (see below), whose sum is σ = 66463805289. Its totient is φ = 20265255472.

The previous prime is 42379502953. The next prime is 42379502987. The reversal of 42379502978 is 87920597324.

It can be written as a sum of positive squares in 2 ways, for example, as 39206772049 + 3172730929 = 198007^2 + 56327^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145567.

It is a super-3 number, since 3×42379502978³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon 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 8 ways as a sum of consecutive naturals, for example, 6692918 + ... + 6699246.

Almost surely, 2^42379502978 is an apocalyptic number.

42379502978 is a deficient number, since it is larger than the sum of its proper divisors (24084302311).

42379502978 is an frugal number, since it uses more digits than its factorization.

42379502978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12706 (or 6354 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 42379502978 in words is "forty-two billion, three hundred seventy-nine million, five hundred two thousand, nine hundred seventy-eight".