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1224061 = 2942209
BaseRepresentation
bin100101010110101111101
32022012002121
410222311331
5303132221
642122541
713255456
oct4526575
92265077
101224061
11766723
124b0451
1333b1c7
1423c12d
15192a41
hex12ad7d

1224061 has 4 divisors (see below), whose sum is σ = 1266300. Its totient is φ = 1181824.

The previous prime is 1224059. The next prime is 1224077. The reversal of 1224061 is 1604221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1604221 = 6132617.

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 403225 = 906^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224061 - 21 = 1224059 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 (1224031) 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, 21076 + ... + 21133.

It is an arithmetic number, because the mean of its divisors is an integer number (316575).

21224061 is an apocalyptic number.

It is an amenable number.

1224061 is a deficient number, since it is larger than the sum of its proper divisors (42239).

1224061 is an equidigital number, since it uses as much as digits as its factorization.

1224061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42238.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1224061 is about 1106.3729027774. The cubic root of 1224061 is about 106.9714017961.

Adding to 1224061 its reverse (1604221), we get a palindrome (2828282).

The spelling of 1224061 in words is "one million, two hundred twenty-four thousand, sixty-one".

Divisors: 1 29 42209 1224061