1392105 has 48 divisors (see below), whose sum is σ = 2681280. Its totient is φ = 612480.
The previous prime is 1392103. The next prime is 1392133. The reversal of 1392105 is 5012931.
It is not a de Polignac number, because 1392105 - 21 = 1392103 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1392101) 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 47 ways as a sum of consecutive naturals, for example, 23566 + ... + 23624.
It is an arithmetic number, because the mean of its divisors is an integer number (55860).
21392105 is an apocalyptic number.
1392105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1392105 is a deficient number, since it is larger than the sum of its proper divisors (1289175).
1392105 is a wasteful number, since it uses less digits than its factorization.
1392105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 102 (or 91 counting only the distinct ones).
The product of its (nonzero) digits is 270, while the sum is 21.
The square root of 1392105 is about 1179.8749933785. The cubic root of 1392105 is about 111.6582107901.
The spelling of 1392105 in words is "one million, three hundred ninety-two thousand, one hundred five".
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