2006125978 has 8 divisors (see below), whose sum is σ = 3009588372. Its totient is φ = 1002929856.

The previous prime is 2006125973. The next prime is 2006125997. The reversal of 2006125978 is 8795216002.

It can be written as a sum of positive squares in 2 ways, for example, as 1953374809 + 52751169 = 44197^2 + 7263^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2006125978.

It is not an unprimeable number, because it can be changed into a prime (2006125973) 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 3 ways as a sum of consecutive naturals, for example, 46525 + ... + 78592.

Almost surely, 2^2006125978 is an apocalyptic number.

2006125978 is a deficient number, since it is larger than the sum of its proper divisors (1003462394).

2006125978 is a wasteful number, since it uses less digits than its factorization.

2006125978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133136.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2006125978 is about 44789.7976999227. The cubic root of 2006125978 is about 1261.2061135136.

The spelling of 2006125978 in words is "two billion, six million, one hundred twenty-five thousand, nine hundred seventy-eight".