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3120125 = 53109229
BaseRepresentation
bin1011111001101111111101
312212112000012
423321233331
51244321000
6150513005
735343401
oct13715775
95775005
103120125
111841218
121065765
13853238
145b3101
15419735
hex2f9bfd

3120125 has 16 divisors (see below), whose sum is σ = 3946800. Its totient is φ = 2462400.

The previous prime is 3120107. The next prime is 3120127. The reversal of 3120125 is 5210213.

3120125 = T158 + T159 + ... + T282.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 182329 + 2937796 = 427^2 + 1714^2 .

It is not a de Polignac number, because 3120125 - 28 = 3119869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120127) by changing a digit.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13511 + ... + 13739.

It is an arithmetic number, because the mean of its divisors is an integer number (246675).

Almost surely, 23120125 is an apocalyptic number.

It is an amenable number.

3120125 is a deficient number, since it is larger than the sum of its proper divisors (826675).

3120125 is a wasteful number, since it uses less digits than its factorization.

3120125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 3120125 is about 1766.3875565685. The cubic root of 3120125 is about 146.1248228824.

Adding to 3120125 its reverse (5210213), we get a palindrome (8330338).

The spelling of 3120125 in words is "three million, one hundred twenty thousand, one hundred twenty-five".

Divisors: 1 5 25 109 125 229 545 1145 2725 5725 13625 24961 28625 124805 624025 3120125