141723221 has 4 divisors (see below), whose sum is σ = 142207212. Its totient is φ = 141239232.

The previous prime is 141723199. The next prime is 141723229. The reversal of 141723221 is 122327141.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114276100 + 27447121 = 10690^2 + 5239^2 .

It is a cyclic number.

It is not a de Polignac number, because 141723221 - 2¹⁴ = 141706837 is a prime.

It is a super-2 number, since 2×141723221² = 40170942741229682, 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 (141723229) 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, 241556 + ... + 242141.

It is an arithmetic number, because the mean of its divisors is an integer number (35551803).

Almost surely, 2^141723221 is an apocalyptic number.

It is an amenable number.

141723221 is a deficient number, since it is larger than the sum of its proper divisors (483991).

141723221 is an equidigital number, since it uses as much as digits as its factorization.

141723221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483990.

The product of its digits is 672, while the sum is 23.

The square root of 141723221 is about 11904.7562343796. The cubic root of 141723221 is about 521.3711606201.

The spelling of 141723221 in words is "one hundred forty-one million, seven hundred twenty-three thousand, two hundred twenty-one".