141707921 has 2 divisors, whose sum is σ = 141707922. Its totient is φ = 141707920.

The previous prime is 141707893. The next prime is 141707953. The reversal of 141707921 is 129707141.

It is an a-pointer prime, because the next prime (141707953) can be obtained adding 141707921 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96334225 + 45373696 = 9815^2 + 6736^2 .

It is an emirp because it is prime and its reverse (129707141) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141707921 is a prime.

It is a super-2 number, since 2×141707921² = 40162269748284482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (141707981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70853960 + 70853961.

It is an arithmetic number, because the mean of its divisors is an integer number (70853961).

Almost surely, 2^141707921 is an apocalyptic number.

It is an amenable number.

141707921 is a deficient number, since it is larger than the sum of its proper divisors (1).

141707921 is an equidigital number, since it uses as much as digits as its factorization.

141707921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 141707921 is about 11904.1136167293. The cubic root of 141707921 is about 521.3523980730.

The spelling of 141707921 in words is "one hundred forty-one million, seven hundred seven thousand, nine hundred twenty-one".