1261223241 has 8 divisors (see below), whose sum is σ = 1683421824. Its totient is φ = 839920080.

The previous prime is 1261223221. The next prime is 1261223261. The reversal of 1261223241 is 1423221621.

1261223241 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1261223221) and next prime (1261223261).

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

It is not a de Polignac number, because 1261223241 - 2⁷ = 1261223113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1261223221) 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, 220561 + ... + 226206.

It is an arithmetic number, because the mean of its divisors is an integer number (210427728).

Almost surely, 2^1261223241 is an apocalyptic number.

It is an amenable number.

1261223241 is a deficient number, since it is larger than the sum of its proper divisors (422198583).

1261223241 is an equidigital number, since it uses as much as digits as its factorization.

1261223241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447711.

The product of its digits is 1152, while the sum is 24.

The square root of 1261223241 is about 35513.7049742772. The cubic root of 1261223241 is about 1080.4317092682.

Adding to 1261223241 its reverse (1423221621), we get a palindrome (2684444862).

It can be divided in two parts, 12612 and 23241, that added together give a palindrome (35853).

The spelling of 1261223241 in words is "one billion, two hundred sixty-one million, two hundred twenty-three thousand, two hundred forty-one".