240400503 has 24 divisors (see below), whose sum is σ = 400791456. Its totient is φ = 136008000.

The previous prime is 240400499. The next prime is 240400513. The reversal of 240400503 is 305004042.

It is a happy number.

It is not a de Polignac number, because 240400503 - 2² = 240400499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240400513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12528 + ... + 25253.

It is an arithmetic number, because the mean of its divisors is an integer number (16699644).

Almost surely, 2^240400503 is an apocalyptic number.

240400503 is a deficient number, since it is larger than the sum of its proper divisors (160390953).

240400503 is a wasteful number, since it uses less digits than its factorization.

240400503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37895 (or 37892 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 240400503 is about 15504.8541753865. The cubic root of 240400503 is about 621.7919912873.

Adding to 240400503 its reverse (305004042), we get a palindrome (545404545).

The spelling of 240400503 in words is "two hundred forty million, four hundred thousand, five hundred three".