4127131978 has 8 divisors (see below), whose sum is σ = 6194140740. Its totient is φ = 2062418400.

The previous prime is 4127131927. The next prime is 4127131979. The reversal of 4127131978 is 8791317214.

It can be written as a sum of positive squares in 2 ways, for example, as 4118173929 + 8958049 = 64173^2 + 2993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4127131979) 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 3 ways as a sum of consecutive naturals, for example, 569293 + ... + 576496.

Almost surely, 2^4127131978 is an apocalyptic number.

4127131978 is a deficient number, since it is larger than the sum of its proper divisors (2067008762).

4127131978 is a wasteful number, since it uses less digits than its factorization.

4127131978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147592.

The product of its digits is 84672, while the sum is 43.

The square root of 4127131978 is about 64242.7581755329. The cubic root of 4127131978 is about 1604.0434161025.

The spelling of 4127131978 in words is "four billion, one hundred twenty-seven million, one hundred thirty-one thousand, nine hundred seventy-eight".