4121505678 has 16 divisors (see below), whose sum is σ = 8246551680. Its totient is φ = 1373245176.

The previous prime is 4121505673. The next prime is 4121505683. The reversal of 4121505678 is 8765051214.

It is an interprime number because it is at equal distance from previous prime (4121505673) and next prime (4121505683).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121505673) by changing a digit.

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, 132258 + ... + 160421.

It is an arithmetic number, because the mean of its divisors is an integer number (515409480).

Almost surely, 2^4121505678 is an apocalyptic number.

4121505678 is an abundant number, since it is smaller than the sum of its proper divisors (4125046002).

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

4121505678 is a wasteful number, since it uses less digits than its factorization.

4121505678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295031.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 4121505678 is about 64198.9538699814. The cubic root of 4121505678 is about 1603.3141822057.

The spelling of 4121505678 in words is "four billion, one hundred twenty-one million, five hundred five thousand, six hundred seventy-eight".