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12742190 = 254329633
BaseRepresentation
bin110000100110…
…111000101110
3212222100222222
4300212320232
511230222230
61133035342
7213210146
oct60467056
925870888
1012742190
11721343a
124325b52
132841a76
141999926
1511ba6e5
hexc26e2e

12742190 has 16 divisors (see below), whose sum is σ = 23470128. Its totient is φ = 4978176.

The previous prime is 12742189. The next prime is 12742193. The reversal of 12742190 is 9124721.

12742190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×127421902 = 324726811992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14387 + ... + 15246.

It is an arithmetic number, because the mean of its divisors is an integer number (1466883).

Almost surely, 212742190 is an apocalyptic number.

12742190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12742190 is a deficient number, since it is larger than the sum of its proper divisors (10727938).

12742190 is a wasteful number, since it uses less digits than its factorization.

12742190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29683.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12742190 is about 3569.6204280007. The cubic root of 12742190 is about 233.5687261685.

The spelling of 12742190 in words is "twelve million, seven hundred forty-two thousand, one hundred ninety".

Divisors: 1 2 5 10 43 86 215 430 29633 59266 148165 296330 1274219 2548438 6371095 12742190