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12421097 = 13955469
BaseRepresentation
bin101111011000…
…011111101001
3212101001112122
4233120133221
511134433342
61122121025
7210402053
oct57303751
925331478
1012421097
117014177
1241b0175
13275b880
1419148d3
1511554d2
hexbd87e9

12421097 has 4 divisors (see below), whose sum is σ = 13376580. Its totient is φ = 11465616.

The previous prime is 12421061. The next prime is 12421099. The reversal of 12421097 is 79012421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5125696 + 7295401 = 2264^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 12421097 - 28 = 12420841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12421099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477722 + ... + 477747.

It is an arithmetic number, because the mean of its divisors is an integer number (3344145).

Almost surely, 212421097 is an apocalyptic number.

It is an amenable number.

12421097 is a deficient number, since it is larger than the sum of its proper divisors (955483).

12421097 is an equidigital number, since it uses as much as digits as its factorization.

12421097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955482.

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

The square root of 12421097 is about 3524.3576719737. The cubic root of 12421097 is about 231.5900968996.

The spelling of 12421097 in words is "twelve million, four hundred twenty-one thousand, ninety-seven".

Divisors: 1 13 955469 12421097