1240065 has 24 divisors (see below), whose sum is σ = 2277288. Its totient is φ = 622080.

The previous prime is 1240039. The next prime is 1240081. The reversal of 1240065 is 5600421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 408321 + 831744 = 639^2 + 912^2 .

It is not a de Polignac number, because 1240065 - 2¹⁰ = 1239041 is a prime.

It is a super-2 number, since 2×1240065² = 3075522408450, which contains 22 as substring.

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (94887).

2^1240065 is an apocalyptic number.

1240065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240065 is a deficient number, since it is larger than the sum of its proper divisors (1037223).

1240065 is a wasteful number, since it uses less digits than its factorization.

1240065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1646 counting only the distinct ones).

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

The square root of 1240065 is about 1113.5820580451. The cubic root of 1240065 is about 107.4355842680.

Adding to 1240065 its reverse (5600421), we get a palindrome (6840486).

The spelling of 1240065 in words is "one million, two hundred forty thousand, sixty-five".