1261330441 has 8 divisors (see below), whose sum is σ = 1441975104. Its totient is φ = 1080799440.

The previous prime is 1261330403. The next prime is 1261330457. The reversal of 1261330441 is 1440331621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1261330441 - 2⁷ = 1261330313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1261330841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3130 + ... + 50323.

It is an arithmetic number, because the mean of its divisors is an integer number (180246888).

Almost surely, 2^1261330441 is an apocalyptic number.

It is an amenable number.

1261330441 is a deficient number, since it is larger than the sum of its proper divisors (180644663).

1261330441 is an equidigital number, since it uses as much as digits as its factorization.

1261330441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56831.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1261330441 is about 35515.2142186979. The cubic root of 1261330441 is about 1080.4623194975.

The spelling of 1261330441 in words is "one billion, two hundred sixty-one million, three hundred thirty thousand, four hundred forty-one".