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102912001 = 443232307
BaseRepresentation
bin1100010001001…
…01000000000001
321011122110201121
412020211000001
5202321141001
614113432241
72356510663
oct610450001
9234573647
10102912001
1153100345
122a56b681
131842309a
14d94c533
15907c6a1
hex6225001

102912001 has 4 divisors (see below), whose sum is σ = 103144752. Its totient is φ = 102679252.

The previous prime is 102911993. The next prime is 102912011. The reversal of 102912001 is 100219201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100219201 = 321731153.

It is a cyclic number.

It is not a de Polignac number, because 102912001 - 23 = 102911993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102912011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115711 + ... + 116596.

It is an arithmetic number, because the mean of its divisors is an integer number (25786188).

Almost surely, 2102912001 is an apocalyptic number.

It is an amenable number.

102912001 is a deficient number, since it is larger than the sum of its proper divisors (232751).

102912001 is an equidigital number, since it uses as much as digits as its factorization.

102912001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232750.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 102912001 is about 10144.5552391418. Note that the first 3 decimals coincide. The cubic root of 102912001 is about 468.6212817299.

The spelling of 102912001 in words is "one hundred two million, nine hundred twelve thousand, one".

Divisors: 1 443 232307 102912001