420000244240 has 40 divisors (see below), whose sum is σ = 1033941781080. Its totient is φ = 158117738496.

The previous prime is 420000244217. The next prime is 420000244259. The reversal of 420000244240 is 42442000024.

It can be written as a sum of positive squares in 4 ways, for example, as 127055176704 + 292945067536 = 356448^2 + 541244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154410495 + ... + 154413214.

It is an arithmetic number, because the mean of its divisors is an integer number (25848544527).

Almost surely, 2^420000244240 is an apocalyptic number.

420000244240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420000244240 is an abundant number, since it is smaller than the sum of its proper divisors (613941536840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420000244240 is a wasteful number, since it uses less digits than its factorization.

420000244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308823739 (or 308823733 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 420000244240 its reverse (42442000024), we get a palindrome (462442244264).

The spelling of 420000244240 in words is "four hundred twenty billion, two hundred forty-four thousand, two hundred forty".