240420515 has 8 divisors (see below), whose sum is σ = 295541568. Its totient is φ = 187645120.

The previous prime is 240420503. The next prime is 240420517. The reversal of 240420515 is 515024042.

It is a happy number.

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

It is not a de Polignac number, because 240420515 - 2⁶ = 240420451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240420517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586187 + ... + 586596.

It is an arithmetic number, because the mean of its divisors is an integer number (36942696).

Almost surely, 2^240420515 is an apocalyptic number.

240420515 is a deficient number, since it is larger than the sum of its proper divisors (55121053).

240420515 is a wasteful number, since it uses less digits than its factorization.

240420515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172829.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 240420515 is about 15505.4995082390. The cubic root of 240420515 is about 621.8092443794.

Adding to 240420515 its reverse (515024042), we get a palindrome (755444557).

The spelling of 240420515 in words is "two hundred forty million, four hundred twenty thousand, five hundred fifteen".