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12420301 = 79157219
BaseRepresentation
bin101111011000…
…010011001101
3212101000110011
4233120103031
511134422201
61122113221
7210366535
oct57302315
925330404
1012420301
117013613
1241ab811
13275b3ba
1419144c5
151155151
hexbd84cd

12420301 has 4 divisors (see below), whose sum is σ = 12577600. Its totient is φ = 12263004.

The previous prime is 12420277. The next prime is 12420311. The reversal of 12420301 is 10302421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10302421 = 31213301.

It is a cyclic number.

It is not a de Polignac number, because 12420301 - 25 = 12420269 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 (12420311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78531 + ... + 78688.

It is an arithmetic number, because the mean of its divisors is an integer number (3144400).

Almost surely, 212420301 is an apocalyptic number.

It is an amenable number.

12420301 is a deficient number, since it is larger than the sum of its proper divisors (157299).

12420301 is an equidigital number, since it uses as much as digits as its factorization.

12420301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157298.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12420301 is about 3524.2447417851. The cubic root of 12420301 is about 231.5851496807.

Adding to 12420301 its reverse (10302421), we get a palindrome (22722722).

It can be divided in two parts, 12420 and 301, that added together give a palindrome (12721).

The spelling of 12420301 in words is "twelve million, four hundred twenty thousand, three hundred one".

Divisors: 1 79 157219 12420301