5123402878 has 16 divisors (see below), whose sum is σ = 8387057520. Its totient is φ = 2327900800.

The previous prime is 5123402831. The next prime is 5123402903. The reversal of 5123402878 is 8782043215.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5123402878.

It is a congruent number.

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, 12768 + ... + 102028.

It is an arithmetic number, because the mean of its divisors is an integer number (524191095).

Almost surely, 2^5123402878 is an apocalyptic number.

5123402878 is a deficient number, since it is larger than the sum of its proper divisors (3263654642).

5123402878 is a wasteful number, since it uses less digits than its factorization.

5123402878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91883.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 5123402878 is about 71577.9496632867. The cubic root of 5123402878 is about 1723.9295048810.

The spelling of 5123402878 in words is "five billion, one hundred twenty-three million, four hundred two thousand, eight hundred seventy-eight".