1305440135 has 8 divisors (see below), whose sum is σ = 1580900640. Its totient is φ = 1034770464.

The previous prime is 1305440117. The next prime is 1305440137. The reversal of 1305440135 is 5310445031.

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

It is a cyclic number.

It is not a de Polignac number, because 1305440135 - 2²⁶ = 1238331271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305440137) 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, 1197107 + ... + 1198196.

It is an arithmetic number, because the mean of its divisors is an integer number (197612580).

Almost surely, 2^1305440135 is an apocalyptic number.

1305440135 is a deficient number, since it is larger than the sum of its proper divisors (275460505).

1305440135 is a wasteful number, since it uses less digits than its factorization.

1305440135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395417.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1305440135 is about 36130.8750931942. The cubic root of 1305440135 is about 1092.9131553202.

Adding to 1305440135 its reverse (5310445031), we get a palindrome (6615885166).

The spelling of 1305440135 in words is "one billion, three hundred five million, four hundred forty thousand, one hundred thirty-five".