70242247 has 2 divisors, whose sum is σ = 70242248. Its totient is φ = 70242246.

The previous prime is 70242209. The next prime is 70242257. The reversal of 70242247 is 74224207.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70242247 - 2¹⁹ = 69717959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70242257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35121123 + 35121124.

It is an arithmetic number, because the mean of its divisors is an integer number (35121124).

Almost surely, 2^70242247 is an apocalyptic number.

70242247 is a deficient number, since it is larger than the sum of its proper divisors (1).

70242247 is an equidigital number, since it uses as much as digits as its factorization.

70242247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 70242247 is about 8381.0647891542. The cubic root of 70242247 is about 412.6033964254.

The spelling of 70242247 in words is "seventy million, two hundred forty-two thousand, two hundred forty-seven".