241287139 has 2 divisors, whose sum is σ = 241287140. Its totient is φ = 241287138.

The previous prime is 241287127. The next prime is 241287191. The reversal of 241287139 is 931782142.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 241287139 - 2¹¹ = 241285091 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 241287098 and 241287107.

It is not a weakly prime, because it can be changed into another prime (241287199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120643569 + 120643570.

It is an arithmetic number, because the mean of its divisors is an integer number (120643570).

Almost surely, 2^241287139 is an apocalyptic number.

241287139 is a deficient number, since it is larger than the sum of its proper divisors (1).

241287139 is an equidigital number, since it uses as much as digits as its factorization.

241287139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 241287139 is about 15533.4200677121. The cubic root of 241287139 is about 622.5554766341. Note that the first 3 decimals are identical.

The spelling of 241287139 in words is "two hundred forty-one million, two hundred eighty-seven thousand, one hundred thirty-nine".