141243021 has 64 divisors (see below), whose sum is σ = 233798400. Its totient is φ = 84913920.

The previous prime is 141243001. The next prime is 141243029. The reversal of 141243021 is 120342141.

It is not a de Polignac number, because 141243021 - 2⁶ = 141242957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 141242985 and 141243003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141243029) 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 63 ways as a sum of consecutive naturals, for example, 1078126 + ... + 1078256.

It is an arithmetic number, because the mean of its divisors is an integer number (3653100).

Almost surely, 2^141243021 is an apocalyptic number.

It is an amenable number.

141243021 is a deficient number, since it is larger than the sum of its proper divisors (92555379).

141243021 is an equidigital number, since it uses as much as digits as its factorization.

141243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 141243021 is about 11884.5707116412. The cubic root of 141243021 is about 520.7816412968.

Adding to 141243021 its reverse (120342141), we get a palindrome (261585162).

The spelling of 141243021 in words is "one hundred forty-one million, two hundred forty-three thousand, twenty-one".