1130721041 has 4 divisors (see below), whose sum is σ = 1131028800. Its totient is φ = 1130413284.

The previous prime is 1130721029. The next prime is 1130721043. The reversal of 1130721041 is 1401270311.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130721041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130721043) 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, 148301 + ... + 155738.

It is an arithmetic number, because the mean of its divisors is an integer number (282757200).

Almost surely, 2^1130721041 is an apocalyptic number.

It is an amenable number.

1130721041 is a deficient number, since it is larger than the sum of its proper divisors (307759).

1130721041 is an equidigital number, since it uses as much as digits as its factorization.

1130721041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307758.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1130721041 is about 33626.1957556902. The cubic root of 1130721041 is about 1041.8019306744.

Adding to 1130721041 its reverse (1401270311), we get a palindrome (2531991352).

The spelling of 1130721041 in words is "one billion, one hundred thirty million, seven hundred twenty-one thousand, forty-one".