1240525271 has 2 divisors, whose sum is σ = 1240525272. Its totient is φ = 1240525270.

The previous prime is 1240525267. The next prime is 1240525331. The reversal of 1240525271 is 1725250421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1725250421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240525271 - 2² = 1240525267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240525211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620262635 + 620262636.

It is an arithmetic number, because the mean of its divisors is an integer number (620262636).

Almost surely, 2^1240525271 is an apocalyptic number.

1240525271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240525271 is an equidigital number, since it uses as much as digits as its factorization.

1240525271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1240525271 is about 35221.0912806517. The cubic root of 1240525271 is about 1074.4887479899.

Adding to 1240525271 its reverse (1725250421), we get a palindrome (2965775692).

The spelling of 1240525271 in words is "one billion, two hundred forty million, five hundred twenty-five thousand, two hundred seventy-one".