141866861 has 2 divisors, whose sum is σ = 141866862. Its totient is φ = 141866860.

The previous prime is 141866807. The next prime is 141866899. The reversal of 141866861 is 168668141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108284836 + 33582025 = 10406^2 + 5795^2 .

It is an emirp because it is prime and its reverse (168668141) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141866861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141865861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70933430 + 70933431.

It is an arithmetic number, because the mean of its divisors is an integer number (70933431).

Almost surely, 2^141866861 is an apocalyptic number.

It is an amenable number.

141866861 is a deficient number, since it is larger than the sum of its proper divisors (1).

141866861 is an equidigital number, since it uses as much as digits as its factorization.

141866861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 141866861 is about 11910.7875894082. The cubic root of 141866861 is about 521.5472420140.

The spelling of 141866861 in words is "one hundred forty-one million, eight hundred sixty-six thousand, eight hundred sixty-one".