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12423013 = 231274253
BaseRepresentation
bin101111011000…
…111101100101
3212101011011121
4233120331211
511140014023
61122133541
7210410461
oct57307545
925334147
1012423013
117015659
1241b12b1
13275c6c5
1419154a1
151155d5d
hexbd8f65

12423013 has 8 divisors (see below), whose sum is σ = 13068288. Its totient is φ = 11786544.

The previous prime is 12423011. The next prime is 12423031. The reversal of 12423013 is 31032421.

It is a happy number.

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 12423013 - 21 = 12423011 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 (12423011) 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, 795 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (1633536).

Almost surely, 212423013 is an apocalyptic number.

It is an amenable number.

12423013 is a deficient number, since it is larger than the sum of its proper divisors (645275).

12423013 is a wasteful number, since it uses less digits than its factorization.

12423013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403.

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

The square root of 12423013 is about 3524.6294840735. The cubic root of 12423013 is about 231.6020041627.

Adding to 12423013 its reverse (31032421), we get a palindrome (43455434).

The spelling of 12423013 in words is "twelve million, four hundred twenty-three thousand, thirteen".

Divisors: 1 23 127 2921 4253 97819 540131 12423013