1305020241 has 20 divisors (see below), whose sum is σ = 2227972032. Its totient is φ = 745725528.

The previous prime is 1305020239. The next prime is 1305020243. The reversal of 1305020241 is 1420205031.

It is an interprime number because it is at equal distance from previous prime (1305020239) and next prime (1305020243).

It is not a de Polignac number, because 1305020241 - 2¹ = 1305020239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305020243) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1150245 + ... + 1151378.

Almost surely, 2^1305020241 is an apocalyptic number.

It is an amenable number.

1305020241 is a deficient number, since it is larger than the sum of its proper divisors (922951791).

1305020241 is an equidigital number, since it uses as much as digits as its factorization.

1305020241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301642 (or 2301633 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1305020241 is about 36125.0638892169. The cubic root of 1305020241 is about 1092.7959644777.

Adding to 1305020241 its reverse (1420205031), we get a palindrome (2725225272).

The spelling of 1305020241 in words is "one billion, three hundred five million, twenty thousand, two hundred forty-one".