141402509 has 2 divisors, whose sum is σ = 141402510. Its totient is φ = 141402508.

The previous prime is 141402491. The next prime is 141402511. The reversal of 141402509 is 905204141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141015625 + 386884 = 11875^2 + 622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141402509 is a prime.

Together with 141402511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141402529) 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 as a sum of consecutive naturals, namely, 70701254 + 70701255.

It is an arithmetic number, because the mean of its divisors is an integer number (70701255).

Almost surely, 2^141402509 is an apocalyptic number.

It is an amenable number.

141402509 is a deficient number, since it is larger than the sum of its proper divisors (1).

141402509 is an equidigital number, since it uses as much as digits as its factorization.

141402509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 141402509 is about 11891.2786949091. The cubic root of 141402509 is about 520.9775853252.

The spelling of 141402509 in words is "one hundred forty-one million, four hundred two thousand, five hundred nine".