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1266841 is a prime number
BaseRepresentation
bin100110101010010011001
32101100210001
410311102121
5311014331
643053001
713524262
oct4652231
92340701
101266841
11795884
12511161
13354814
1424d969
151a0561
hex135499

1266841 has 2 divisors, whose sum is σ = 1266842. Its totient is φ = 1266840.

The previous prime is 1266799. The next prime is 1266847. The reversal of 1266841 is 1486621.

It is the 460-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 594441 = 820^2 + 771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1266841 is a prime.

It is a super-2 number, since 2×12668412 = 3209772238562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1266847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633420 + 633421.

It is an arithmetic number, because the mean of its divisors is an integer number (633421).

21266841 is an apocalyptic number.

It is an amenable number.

1266841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266841 is an equidigital number, since it uses as much as digits as its factorization.

1266841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 1266841 is about 1125.5403146933. The cubic root of 1266841 is about 108.2033491628.

The spelling of 1266841 in words is "one million, two hundred sixty-six thousand, eight hundred forty-one".