141805643 has 4 divisors (see below), whose sum is σ = 162063600. Its totient is φ = 121547688.

The previous prime is 141805637. The next prime is 141805681. The reversal of 141805643 is 346508141.

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

It is a cyclic number.

It is not a de Polignac number, because 141805643 - 2¹⁴ = 141789259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141805613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10128968 + ... + 10128981.

It is an arithmetic number, because the mean of its divisors is an integer number (40515900).

Almost surely, 2^141805643 is an apocalyptic number.

141805643 is a deficient number, since it is larger than the sum of its proper divisors (20257957).

141805643 is an equidigital number, since it uses as much as digits as its factorization.

141805643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20257956.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 141805643 is about 11908.2174568657. The cubic root of 141805643 is about 521.4722123407.

The spelling of 141805643 in words is "one hundred forty-one million, eight hundred five thousand, six hundred forty-three".