42145376091 has 64 divisors (see below), whose sum is σ = 75150458880. Its totient is φ = 20381051520.

The previous prime is 42145376069. The next prime is 42145376093. The reversal of 42145376091 is 19067354124.

It is not a de Polignac number, because 42145376091 - 2²⁶ = 42078267227 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42145376093) 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 63 ways as a sum of consecutive naturals, for example, 29746 + ... + 291848.

It is an arithmetic number, because the mean of its divisors is an integer number (1174225920).

Almost surely, 2^42145376091 is an apocalyptic number.

42145376091 is a deficient number, since it is larger than the sum of its proper divisors (33005082789).

42145376091 is a wasteful number, since it uses less digits than its factorization.

42145376091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262176.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 42145376091 in words is "forty-two billion, one hundred forty-five million, three hundred seventy-six thousand, ninety-one".