42205545251 has 8 divisors (see below), whose sum is σ = 42474488400. Its totient is φ = 41936970880.

The previous prime is 42205545223. The next prime is 42205545271. The reversal of 42205545251 is 15254550224.

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 42205545251 - 2²⁶ = 42138436387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42205545211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139271 + ... + 322191.

It is an arithmetic number, because the mean of its divisors is an integer number (5309311050).

Almost surely, 2^42205545251 is an apocalyptic number.

42205545251 is a deficient number, since it is larger than the sum of its proper divisors (268943149).

42205545251 is a wasteful number, since it uses less digits than its factorization.

42205545251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184389.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 42205545251 in words is "forty-two billion, two hundred five million, five hundred forty-five thousand, two hundred fifty-one".