240420556 has 24 divisors (see below), whose sum is σ = 445868640. Its totient is φ = 113232000.

The previous prime is 240420553. The next prime is 240420559. The reversal of 240420556 is 655024042.

It is an interprime number because it is at equal distance from previous prime (240420553) and next prime (240420559).

It is not an unprimeable number, because it can be changed into a prime (240420553) 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, 20520 + ... + 30031.

It is an arithmetic number, because the mean of its divisors is an integer number (18577860).

Almost surely, 2^240420556 is an apocalyptic number.

It is an amenable number.

240420556 is a deficient number, since it is larger than the sum of its proper divisors (205448084).

240420556 is a wasteful number, since it uses less digits than its factorization.

240420556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50625 (or 50623 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 240420556 is about 15505.5008303505. The cubic root of 240420556 is about 621.8092797261.

Adding to 240420556 its reverse (655024042), we get a palindrome (895444598).

The spelling of 240420556 in words is "two hundred forty million, four hundred twenty thousand, five hundred fifty-six".