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BaseRepresentation
bin1110101000001…
…01111111001001
322112220012121112
413110011333021
5222403123123
620102020105
73020000006
oct724057711
9275805545
10122707913
11632a12a9
1235117635
131c564643
15ab8cd78
hex7505fc9

122707913 has 2 divisors, whose sum is σ = 122707914. Its totient is φ = 122707912.

The previous prime is 122707891. The next prime is 122707933. The reversal of 122707913 is 319707221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120714169 + 1993744 = 10987^2 + 1412^2 .

It is a cyclic number.

It is not a de Polignac number, because 122707913 - 212 = 122703817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122707913.

It is not a weakly prime, because it can be changed into another prime (122707933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61353956 + 61353957.

It is an arithmetic number, because the mean of its divisors is an integer number (61353957).

Almost surely, 2122707913 is an apocalyptic number.

It is an amenable number.

122707913 is a deficient number, since it is larger than the sum of its proper divisors (1).

122707913 is an equidigital number, since it uses as much as digits as its factorization.

122707913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 122707913 is about 11077.3603805239. The cubic root of 122707913 is about 496.9250116611.

The spelling of 122707913 in words is "one hundred twenty-two million, seven hundred seven thousand, nine hundred thirteen".