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1272061 = 7237901
BaseRepresentation
bin100110110100011111101
32101121221101
410312203331
5311201221
643133101
713545430
oct4664375
92347841
101272061
1179979a
12514191
13356ccb
14251817
151a1d91
hex1368fd

1272061 has 8 divisors (see below), whose sum is σ = 1517184. Its totient is φ = 1042800.

The previous prime is 1272049. The next prime is 1272067. The reversal of 1272061 is 1602721.

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 1272061 - 211 = 1270013 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 (1272067) 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 7 ways as a sum of consecutive naturals, for example, 3790 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (189648).

21272061 is an apocalyptic number.

It is an amenable number.

1272061 is a deficient number, since it is larger than the sum of its proper divisors (245123).

1272061 is an equidigital number, since it uses as much as digits as its factorization.

1272061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1272061 is about 1127.8568171537. The cubic root of 1272061 is about 108.3517622823.

Adding to 1272061 its reverse (1602721), we get a palindrome (2874782).

The spelling of 1272061 in words is "one million, two hundred seventy-two thousand, sixty-one".

Divisors: 1 7 23 161 7901 55307 181723 1272061