4142749978 has 8 divisors (see below), whose sum is σ = 6223791168. Its totient is φ = 2068152924.

The previous prime is 4142749973. The next prime is 4142749997. The reversal of 4142749978 is 8799472414.

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 (4142749973) 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, 1609426 + ... + 1611997.

It is an arithmetic number, because the mean of its divisors is an integer number (777973896).

Almost surely, 2^4142749978 is an apocalyptic number.

4142749978 is a deficient number, since it is larger than the sum of its proper divisors (2081041190).

4142749978 is a wasteful number, since it uses less digits than its factorization.

4142749978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222068.

The product of its digits is 4064256, while the sum is 55.

The square root of 4142749978 is about 64364.1979519671. The cubic root of 4142749978 is about 1606.0642234273.

The spelling of 4142749978 in words is "four billion, one hundred forty-two million, seven hundred forty-nine thousand, nine hundred seventy-eight".