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102406199 = 779185183
BaseRepresentation
bin1100001101010…
…01100000110111
321010200202220012
412012221200313
5202203444244
614054530435
72352303230
oct606514067
9233622805
10102406199
1152895325
122a366a1b
13182a6aac
14d85a087
158ecc89e
hex61a9837

102406199 has 8 divisors (see below), whose sum is σ = 118517760. Its totient is φ = 86665176.

The previous prime is 102406141. The next prime is 102406247. The reversal of 102406199 is 991604201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102406199 - 220 = 101357623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102406099) 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 in 7 ways as a sum of consecutive naturals, for example, 92039 + ... + 93144.

It is an arithmetic number, because the mean of its divisors is an integer number (14814720).

Almost surely, 2102406199 is an apocalyptic number.

102406199 is a deficient number, since it is larger than the sum of its proper divisors (16111561).

102406199 is an equidigital number, since it uses as much as digits as its factorization.

102406199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185269.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 102406199 is about 10119.5948041411. The cubic root of 102406199 is about 467.8522785412.

The spelling of 102406199 in words is "one hundred two million, four hundred six thousand, one hundred ninety-nine".

Divisors: 1 7 79 553 185183 1296281 14629457 102406199