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12742973 = 25435011
BaseRepresentation
bin110000100111…
…000100111101
3212222102001222
4300213010331
511230233343
61133043125
7213212345
oct60470475
925872058
1012742973
117213a91
1243264a5
132842229
141999d25
1511baa68
hexc2713d

12742973 has 4 divisors (see below), whose sum is σ = 12750528. Its totient is φ = 12735420.

The previous prime is 12742957. The next prime is 12742993. The reversal of 12742973 is 37924721.

12742973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12742973 - 24 = 12742957 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 (12742903) 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, 38 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (3187632).

Almost surely, 212742973 is an apocalyptic number.

It is an amenable number.

12742973 is a deficient number, since it is larger than the sum of its proper divisors (7555).

12742973 is an equidigital number, since it uses as much as digits as its factorization.

12742973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554.

The product of its digits is 21168, while the sum is 35.

The square root of 12742973 is about 3569.7301018424. The cubic root of 12742973 is about 233.5735102902.

The spelling of 12742973 in words is "twelve million, seven hundred forty-two thousand, nine hundred seventy-three".

Divisors: 1 2543 5011 12742973