42161420344255 has 4 divisors (see below), whose sum is σ = 50593704413112. Its totient is φ = 33729136275400.

The previous prime is 42161420344223. The next prime is 42161420344259. The reversal of 42161420344255 is 55244302416124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42161420344255 - 2⁵ = 42161420344223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161420344259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4216142034421 + ... + 4216142034430.

It is an arithmetic number, because the mean of its divisors is an integer number (12648426103278).

Almost surely, 2^{42161420344255} is an apocalyptic number.

42161420344255 is a deficient number, since it is larger than the sum of its proper divisors (8432284068857).

42161420344255 is an equidigital number, since it uses as much as digits as its factorization.

42161420344255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432284068856.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 42161420344255 in words is "forty-two trillion, one hundred sixty-one billion, four hundred twenty million, three hundred forty-four thousand, two hundred fifty-five".