141856805 has 4 divisors (see below), whose sum is σ = 170228172. Its totient is φ = 113485440.

The previous prime is 141856783. The next prime is 141856807. The reversal of 141856805 is 508658141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508658141 = 4111 ⋅123731.

It can be written as a sum of positive squares in 2 ways, for example, as 32821441 + 109035364 = 5729^2 + 10442^2 .

It is a de Polignac number, because none of the positive numbers 2^k-141856805 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 (141856807) 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, 14185676 + ... + 14185685.

It is an arithmetic number, because the mean of its divisors is an integer number (42557043).

Almost surely, 2^141856805 is an apocalyptic number.

It is an amenable number.

141856805 is a deficient number, since it is larger than the sum of its proper divisors (28371367).

141856805 is an equidigital number, since it uses as much as digits as its factorization.

141856805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28371366.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 141856805 is about 11910.3654435958. The cubic root of 141856805 is about 521.5349187155.

The spelling of 141856805 in words is "one hundred forty-one million, eight hundred fifty-six thousand, eight hundred five".