1066042013 has 4 divisors (see below), whose sum is σ = 1073711520. Its totient is φ = 1058372508.

The previous prime is 1066041989. The next prime is 1066042049. The reversal of 1066042013 is 3102406601.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 3102406601 = 7 ⋅443200943.

It is a cyclic number.

It is not a de Polignac number, because 1066042013 - 2¹⁶ = 1065976477 is a prime.

It is a super-2 number, since 2×1066042013² = 2272891146962184338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066042013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066044013) 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, 3834545 + ... + 3834822.

It is an arithmetic number, because the mean of its divisors is an integer number (268427880).

Almost surely, 2^1066042013 is an apocalyptic number.

It is an amenable number.

1066042013 is a deficient number, since it is larger than the sum of its proper divisors (7669507).

1066042013 is an equidigital number, since it uses as much as digits as its factorization.

1066042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669506.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1066042013 is about 32650.2988194595. The cubic root of 1066042013 is about 1021.5464217468.

Adding to 1066042013 its reverse (3102406601), we get a palindrome (4168448614).

The spelling of 1066042013 in words is "one billion, sixty-six million, forty-two thousand, thirteen".