1066534121 has 4 divisors (see below), whose sum is σ = 1066791252. Its totient is φ = 1066276992.

The previous prime is 1066534111. The next prime is 1066534123. The reversal of 1066534121 is 1214356601.

It is a happy number.

1066534121 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 an emirpimes, since its reverse is a distinct semiprime: 1214356601 = 127 ⋅9561863.

It can be written as a sum of positive squares in 2 ways, for example, as 579846400 + 486687721 = 24080^2 + 22061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066534121 is a prime.

It is a super-2 number, since 2×1066534121² = 2274990062514485282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066534123) 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, 122240 + ... + 130673.

It is an arithmetic number, because the mean of its divisors is an integer number (266697813).

Almost surely, 2^1066534121 is an apocalyptic number.

It is an amenable number.

1066534121 is a deficient number, since it is larger than the sum of its proper divisors (257131).

1066534121 is an equidigital number, since it uses as much as digits as its factorization.

1066534121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257130.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1066534121 is about 32657.8339912493. The cubic root of 1066534121 is about 1021.7035868572.

The spelling of 1066534121 in words is "one billion, sixty-six million, five hundred thirty-four thousand, one hundred twenty-one".