1265241241 has 8 divisors (see below), whose sum is σ = 1393930368. Its totient is φ = 1138830000.

The previous prime is 1265241227. The next prime is 1265241251. The reversal of 1265241241 is 1421425621.

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

It is not a de Polignac number, because 1265241241 - 2¹³ = 1265233049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265241221) 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, 568305 + ... + 570526.

It is an arithmetic number, because the mean of its divisors is an integer number (174241296).

Almost surely, 2^1265241241 is an apocalyptic number.

1265241241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1265241241 is a deficient number, since it is larger than the sum of its proper divisors (128689127).

1265241241 is a wasteful number, since it uses less digits than its factorization.

1265241241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138943.

The product of its digits is 3840, while the sum is 28.

The square root of 1265241241 is about 35570.2297012544. The cubic root of 1265241241 is about 1081.5778380361.

Adding to 1265241241 its reverse (1421425621), we get a palindrome (2686666862).

It can be divided in two parts, 126524 and 1241, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 1265241241 in words is "one billion, two hundred sixty-five million, two hundred forty-one thousand, two hundred forty-one".