1240250515 has 12 divisors (see below), whose sum is σ = 1731288816. Its totient is φ = 850457328.

The previous prime is 1240250513. The next prime is 1240250519. The reversal of 1240250515 is 5150520421.

It is not a de Polignac number, because 1240250515 - 2¹ = 1240250513 is a prime.

It is a super-3 number, since 3×1240250515³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240250515.

It is not an unprimeable number, because it can be changed into a prime (1240250513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2530879 + ... + 2531368.

It is an arithmetic number, because the mean of its divisors is an integer number (144274068).

Almost surely, 2^1240250515 is an apocalyptic number.

1240250515 is a deficient number, since it is larger than the sum of its proper divisors (491038301).

1240250515 is an equidigital number, since it uses as much as digits as its factorization.

1240250515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062266 (or 5062259 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1240250515 is about 35217.1906176515. The cubic root of 1240250515 is about 1074.4094149215.

Adding to 1240250515 its reverse (5150520421), we get a palindrome (6390770936).

The spelling of 1240250515 in words is "one billion, two hundred forty million, two hundred fifty thousand, five hundred fifteen".