7121407247 has 2 divisors, whose sum is σ = 7121407248. Its totient is φ = 7121407246.

The previous prime is 7121407231. The next prime is 7121407259. The reversal of 7121407247 is 7427041217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7121407247 - 2⁴ = 7121407231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7121407207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560703623 + 3560703624.

It is an arithmetic number, because the mean of its divisors is an integer number (3560703624).

Almost surely, 2^7121407247 is an apocalyptic number.

7121407247 is a deficient number, since it is larger than the sum of its proper divisors (1).

7121407247 is an equidigital number, since it uses as much as digits as its factorization.

7121407247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 7121407247 is about 84388.4307651232. The cubic root of 7121407247 is about 1923.9270793540.

The spelling of 7121407247 in words is "seven billion, one hundred twenty-one million, four hundred seven thousand, two hundred forty-seven".