4218120780 has 24 divisors (see below), whose sum is σ = 11810738352. Its totient is φ = 1124832192.

The previous prime is 4218120779. The next prime is 4218120791. The reversal of 4218120780 is 870218124.

It is a happy 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, 35150947 + ... + 35151066.

It is an arithmetic number, because the mean of its divisors is an integer number (492114098).

Almost surely, 2^4218120780 is an apocalyptic number.

It is an amenable number.

4218120780 is an abundant number, since it is smaller than the sum of its proper divisors (7592617572).

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

4218120780 is a wasteful number, since it uses less digits than its factorization.

4218120780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70302025 (or 70302023 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 4218120780 is about 64947.0613653920. The cubic root of 4218120780 is about 1615.7456808841.

The spelling of 4218120780 in words is "four billion, two hundred eighteen million, one hundred twenty thousand, seven hundred eighty".