42520641977 has 8 divisors (see below), whose sum is σ = 47464903200. Its totient is φ = 37756172160.

The previous prime is 42520641887. The next prime is 42520641979. The reversal of 42520641977 is 77914602524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42520641977 - 2²⁶ = 42453533113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42520641979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 44947352 + ... + 44948297.

It is an arithmetic number, because the mean of its divisors is an integer number (5933112900).

Almost surely, 2^42520641977 is an apocalyptic number.

It is an amenable number.

42520641977 is a deficient number, since it is larger than the sum of its proper divisors (4944261223).

42520641977 is a wasteful number, since it uses less digits than its factorization.

42520641977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89895703.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 42520641977 in words is "forty-two billion, five hundred twenty million, six hundred forty-one thousand, nine hundred seventy-seven".