141065921 has 4 divisors (see below), whose sum is σ = 141089712. Its totient is φ = 141042132.

The previous prime is 141065917. The next prime is 141065927. The reversal of 141065921 is 129560141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 129560141 = 3119 ⋅41539.

It is a cyclic number.

It is not a de Polignac number, because 141065921 - 2² = 141065917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141065927) 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 3 ways as a sum of consecutive naturals, for example, 4970 + ... + 17516.

It is an arithmetic number, because the mean of its divisors is an integer number (35272428).

Almost surely, 2^141065921 is an apocalyptic number.

It is an amenable number.

141065921 is a deficient number, since it is larger than the sum of its proper divisors (23791).

141065921 is a wasteful number, since it uses less digits than its factorization.

141065921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23790.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 141065921 is about 11877.1175375173. The cubic root of 141065921 is about 520.5638865761.

The spelling of 141065921 in words is "one hundred forty-one million, sixty-five thousand, nine hundred twenty-one".