1240505275 has 6 divisors (see below), whose sum is σ = 1538226572. Its totient is φ = 992404200.

The previous prime is 1240505261. The next prime is 1240505291. The reversal of 1240505275 is 5725050421.

It is not a de Polignac number, because 1240505275 - 2⁵ = 1240505243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24810081 + ... + 24810130.

Almost surely, 2^1240505275 is an apocalyptic number.

1240505275 is a deficient number, since it is larger than the sum of its proper divisors (297721297).

1240505275 is an equidigital number, since it uses as much as digits as its factorization.

1240505275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49620221 (or 49620216 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 1240505275 is about 35220.8074155037. The cubic root of 1240505275 is about 1074.4829747386.

Adding to 1240505275 its reverse (5725050421), we get a palindrome (6965555696).

The spelling of 1240505275 in words is "one billion, two hundred forty million, five hundred five thousand, two hundred seventy-five".