1110142661 has 2 divisors, whose sum is σ = 1110142662. Its totient is φ = 1110142660.

The previous prime is 1110142639. The next prime is 1110142669. The reversal of 1110142661 is 1662410111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104232900 + 5909761 = 33230^2 + 2431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110142661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110142669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555071330 + 555071331.

It is an arithmetic number, because the mean of its divisors is an integer number (555071331).

Almost surely, 2^1110142661 is an apocalyptic number.

It is an amenable number.

1110142661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110142661 is an equidigital number, since it uses as much as digits as its factorization.

1110142661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1110142661 is about 33318.8034148887. The cubic root of 1110142661 is about 1035.4431612146.

Adding to 1110142661 its reverse (1662410111), we get a palindrome (2772552772).

The spelling of 1110142661 in words is "one billion, one hundred ten million, one hundred forty-two thousand, six hundred sixty-one".