247042339 has 2 divisors, whose sum is σ = 247042340. Its totient is φ = 247042338.

The previous prime is 247042319. The next prime is 247042361. The reversal of 247042339 is 933240742.

It is a happy number.

247042339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247042339 - 2¹⁵ = 247009571 is a prime.

It is a super-2 number, since 2×247042339² = 122059834517181842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247042309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123521169 + 123521170.

It is an arithmetic number, because the mean of its divisors is an integer number (123521170).

Almost surely, 2^247042339 is an apocalyptic number.

247042339 is a deficient number, since it is larger than the sum of its proper divisors (1).

247042339 is an equidigital number, since it uses as much as digits as its factorization.

247042339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 247042339 is about 15717.5805708131. The cubic root of 247042339 is about 627.4663836004.

The spelling of 247042339 in words is "two hundred forty-seven million, forty-two thousand, three hundred thirty-nine".