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12423130 = 2543167173
BaseRepresentation
bin101111011000…
…111111011010
3212101011022221
4233120333122
511140020010
61122134254
7210411016
oct57307732
925334287
1012423130
117015755
1241b138a
13275c785
141915546
151155dda
hexbd8fda

12423130 has 32 divisors (see below), whose sum is σ = 23151744. Its totient is φ = 4796736.

The previous prime is 12423121. The next prime is 12423133. The reversal of 12423130 is 3132421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12423133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71724 + ... + 71896.

It is an arithmetic number, because the mean of its divisors is an integer number (723492).

Almost surely, 212423130 is an apocalyptic number.

12423130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12423130 is a deficient number, since it is larger than the sum of its proper divisors (10728614).

12423130 is a wasteful number, since it uses less digits than its factorization.

12423130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12423130 is about 3524.6460815236. The cubic root of 12423130 is about 231.6027312367.

Adding to 12423130 its reverse (3132421), we get a palindrome (15555551).

The spelling of 12423130 in words is "twelve million, four hundred twenty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 43 86 167 173 215 334 346 430 835 865 1670 1730 7181 7439 14362 14878 28891 35905 37195 57782 71810 74390 144455 288910 1242313 2484626 6211565 12423130