141223521 has 16 divisors (see below), whose sum is σ = 192024000. Its totient is φ = 92295168.

The previous prime is 141223517. The next prime is 141223547. The reversal of 141223521 is 125322141.

It is not a de Polignac number, because 141223521 - 2² = 141223517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (141243521) 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 15 ways as a sum of consecutive naturals, for example, 78585 + ... + 80361.

It is an arithmetic number, because the mean of its divisors is an integer number (12001500).

Almost surely, 2^141223521 is an apocalyptic number.

It is an amenable number.

141223521 is a deficient number, since it is larger than the sum of its proper divisors (50800479).

141223521 is a wasteful number, since it uses less digits than its factorization.

141223521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288.

The product of its digits is 480, while the sum is 21.

The square root of 141223521 is about 11883.7502918902. The cubic root of 141223521 is about 520.7576738368.

Adding to 141223521 its reverse (125322141), we get a palindrome (266545662).

The spelling of 141223521 in words is "one hundred forty-one million, two hundred twenty-three thousand, five hundred twenty-one".