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126390105 = 335936223
BaseRepresentation
bin1111000100010…
…00111101011001
322210211021122000
413202020331121
5224323440410
620312551213
73063204162
oct742107531
9283737560
10126390105
1165386836
12363b2509
132025365a
1412b00769
15b168dc0
hex7888f59

126390105 has 16 divisors (see below), whose sum is σ = 224693760. Its totient is φ = 67407984.

The previous prime is 126390049. The next prime is 126390133. The reversal of 126390105 is 501093621.

126390105 is a `hidden beast` number, since 12 + 639 + 0 + 10 + 5 = 666.

It is not a de Polignac number, because 126390105 - 214 = 126373721 is a prime.

It is a super-2 number, since 2×1263901052 = 31948917283822050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467977 + ... + 468246.

It is an arithmetic number, because the mean of its divisors is an integer number (14043360).

Almost surely, 2126390105 is an apocalyptic number.

126390105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126390105 is a deficient number, since it is larger than the sum of its proper divisors (98303655).

126390105 is an equidigital number, since it uses as much as digits as its factorization.

126390105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936237 (or 936231 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 126390105 is about 11242.3353890551. The cubic root of 126390105 is about 501.8466447434.

The spelling of 126390105 in words is "one hundred twenty-six million, three hundred ninety thousand, one hundred five".

Divisors: 1 3 5 9 15 27 45 135 936223 2808669 4681115 8426007 14043345 25278021 42130035 126390105