4240645820 has 24 divisors (see below), whose sum is σ = 8913375744. Its totient is φ = 1694730816.

The previous prime is 4240645817. The next prime is 4240645841. The reversal of 4240645820 is 285460424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72572 + ... + 117251.

It is an arithmetic number, because the mean of its divisors is an integer number (371390656).

Almost surely, 2^4240645820 is an apocalyptic number.

It is an amenable number.

4240645820 is an abundant number, since it is smaller than the sum of its proper divisors (4672729924).

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

4240645820 is a wasteful number, since it uses less digits than its factorization.

4240645820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190949 (or 190947 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 4240645820 is about 65120.2412464819. The cubic root of 4240645820 is about 1618.6166389937.

The spelling of 4240645820 in words is "four billion, two hundred forty million, six hundred forty-five thousand, eight hundred twenty".