42187785441 has 8 divisors (see below), whose sum is σ = 56430095520. Its totient is φ = 28035332832.

The previous prime is 42187785439. The next prime is 42187785461. The reversal of 42187785441 is 14458778124.

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

It is not a de Polignac number, because 42187785441 - 2¹ = 42187785439 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42187785461) 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, 22463271 + ... + 22465148.

It is an arithmetic number, because the mean of its divisors is an integer number (7053761940).

Almost surely, 2^42187785441 is an apocalyptic number.

It is an amenable number.

42187785441 is a deficient number, since it is larger than the sum of its proper divisors (14242310079).

42187785441 is a wasteful number, since it uses less digits than its factorization.

42187785441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44928735.

The product of its digits is 2007040, while the sum is 51.

The spelling of 42187785441 in words is "forty-two billion, one hundred eighty-seven million, seven hundred eighty-five thousand, four hundred forty-one".