4121762978 has 16 divisors (see below), whose sum is σ = 6452873856. Its totient is φ = 1970844480.

The previous prime is 4121762971. The next prime is 4121762987. The reversal of 4121762978 is 8792671214.

It is a super-2 number, since 2×4121762978² = 33977860093622856968, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4121762971) by changing a digit.

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, 321275 + ... + 333857.

It is an arithmetic number, because the mean of its divisors is an integer number (403304616).

Almost surely, 2^4121762978 is an apocalyptic number.

4121762978 is a deficient number, since it is larger than the sum of its proper divisors (2331110878).

4121762978 is a wasteful number, since it uses less digits than its factorization.

4121762978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19729.

The product of its digits is 338688, while the sum is 47.

The square root of 4121762978 is about 64200.9577654415. The cubic root of 4121762978 is about 1603.3475457535.

The spelling of 4121762978 in words is "four billion, one hundred twenty-one million, seven hundred sixty-two thousand, nine hundred seventy-eight".