141821143 has 4 divisors (see below), whose sum is σ = 142100280. Its totient is φ = 141542008.

The previous prime is 141821101. The next prime is 141821153. The reversal of 141821143 is 341128141.

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 141821143 - 2¹⁷ = 141690071 is a prime.

It is a super-2 number, since 2×141821143² = 40226473203652898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141821153) 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, 138805 + ... + 139822.

It is an arithmetic number, because the mean of its divisors is an integer number (35525070).

Almost surely, 2^141821143 is an apocalyptic number.

141821143 is a deficient number, since it is larger than the sum of its proper divisors (279137).

141821143 is an equidigital number, since it uses as much as digits as its factorization.

141821143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279136.

The product of its digits is 768, while the sum is 25.

The square root of 141821143 is about 11908.8682501739. The cubic root of 141821143 is about 521.4912114079.

Adding to 141821143 its reverse (341128141), we get a palindrome (482949284).

The spelling of 141821143 in words is "one hundred forty-one million, eight hundred twenty-one thousand, one hundred forty-three".