141961 has 2 divisors, whose sum is σ = 141962.
Its totient is φ = 141960.
The previous prime is 141959. The next prime is 141971. The reversal of 141961 is 169141.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 109561 + 32400 = 331^2 + 180^2
It is a cyclic number.
It is not a de Polignac number, because 141961 - 21 = 141959 is a prime.
Together with 141959, it forms a pair of twin primes.
141961 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (141931) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70980 + 70981.
It is an arithmetic number, because the mean of its divisors is an integer number (70981).
2141961 is an apocalyptic number.
141961 is the 169-th centered decagonal number.
It is an amenable number.
141961 is a deficient number, since it is larger than the sum of its proper divisors (1).
141961 is an equidigital number, since it uses as much as digits as its factorization.
141961 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 216, while the sum is 22.
The square root of 141961 is about 376.7771224477.
Note that the first 3 decimals coincide.
The cubic root of 141961 is about 52.1662578040.
The spelling of 141961 in words is "one hundred forty-one thousand, nine hundred sixty-one".