141921381 has 16 divisors (see below), whose sum is σ = 222107264. Its totient is φ = 78905664.

The previous prime is 141921359. The next prime is 141921401. The reversal of 141921381 is 183129141.

It is not a de Polignac number, because 141921381 - 2⁵ = 141921349 is a prime.

It is a super-2 number, since 2×141921381² = 40283356769894322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141921181) 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, 90550 + ... + 92103.

It is an arithmetic number, because the mean of its divisors is an integer number (13881704).

Almost surely, 2^141921381 is an apocalyptic number.

It is an amenable number.

141921381 is a deficient number, since it is larger than the sum of its proper divisors (80185883).

141921381 is a wasteful number, since it uses less digits than its factorization.

141921381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182700.

The product of its digits is 1728, while the sum is 30.

The square root of 141921381 is about 11913.0760511297. The cubic root of 141921381 is about 521.6140443517.

The spelling of 141921381 in words is "one hundred forty-one million, nine hundred twenty-one thousand, three hundred eighty-one".