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BaseRepresentation
bin101101110001…
…101101001001
3211120200000011
4231301231021
511033000243
61105111521
7203666431
oct55615511
924520004
1012000073
116856918
1240285a1
132642047
1418452c1
1510c089d
hexb71b49

12000073 has 2 divisors, whose sum is σ = 12000074. Its totient is φ = 12000072.

The previous prime is 12000029. The next prime is 12000091. The reversal of 12000073 is 37000021.

Adding to 12000073 its reverse (37000021), we get a palindrome (49000094).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9935104 + 2064969 = 3152^2 + 1437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12000073 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000036 + 6000037.

It is an arithmetic number, because the mean of its divisors is an integer number (6000037).

Almost surely, 212000073 is an apocalyptic number.

It is an amenable number.

12000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000073 is an equidigital number, since it uses as much as digits as its factorization.

12000073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 12000073 is about 3464.1121517641. The cubic root of 12000073 is about 228.9433127549.

The spelling of 12000073 in words is "twelve million, seventy-three", and thus it is an aban number and an uban number.