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12542313 = 37597253
BaseRepresentation
bin101111110110…
…000101101001
3212121012211010
4233312011221
511202323223
61124454133
7211415340
oct57660551
925535733
1012542313
117097253
12424a349
1327a1ab4
141946b57
15117b393
hexbf6169

12542313 has 8 divisors (see below), whose sum is σ = 19112128. Its totient is φ = 7167024.

The previous prime is 12542293. The next prime is 12542317. The reversal of 12542313 is 31324521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12542313 - 216 = 12476777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 597253 = 12542313 / (1 + 2 + 5 + 4 + 2 + 3 + 1 + 3).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12542313.

It is not an unprimeable number, because it can be changed into a prime (12542317) 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, 298606 + ... + 298647.

It is an arithmetic number, because the mean of its divisors is an integer number (2389016).

Almost surely, 212542313 is an apocalyptic number.

It is an amenable number.

12542313 is a deficient number, since it is larger than the sum of its proper divisors (6569815).

12542313 is an equidigital number, since it uses as much as digits as its factorization.

12542313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597263.

The product of its digits is 720, while the sum is 21.

The square root of 12542313 is about 3541.5128123445. The cubic root of 12542313 is about 232.3410128238.

Adding to 12542313 its reverse (31324521), we get a palindrome (43866834).

The spelling of 12542313 in words is "twelve million, five hundred forty-two thousand, three hundred thirteen".

Divisors: 1 3 7 21 597253 1791759 4180771 12542313