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120123397 is a prime number
BaseRepresentation
bin1110010100011…
…11000000000101
322101000220022201
413022033000011
5221222422042
615530354501
72656013662
oct712170005
9271026281
10120123397
1161896539
123428ba31
131bb6b144
1411d4ca69
15a82c1b7
hex728f005

120123397 has 2 divisors, whose sum is σ = 120123398. Its totient is φ = 120123396.

The previous prime is 120123379. The next prime is 120123413. The reversal of 120123397 is 793321021.

Together with previous prime (120123379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120099681 + 23716 = 10959^2 + 154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120123397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120123337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061698 + 60061699.

It is an arithmetic number, because the mean of its divisors is an integer number (60061699).

Almost surely, 2120123397 is an apocalyptic number.

It is an amenable number.

120123397 is a deficient number, since it is larger than the sum of its proper divisors (1).

120123397 is an equidigital number, since it uses as much as digits as its factorization.

120123397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 120123397 is about 10960.0819796204. The cubic root of 120123397 is about 493.4114253762.

The spelling of 120123397 in words is "one hundred twenty million, one hundred twenty-three thousand, three hundred ninety-seven".