42014978 has 8 divisors (see below), whose sum is σ = 63342972. Its totient is φ = 20900656.

The previous prime is 42014977. The next prime is 42014981. The reversal of 42014978 is 87941024.

It can be written as a sum of positive squares in 2 ways, for example, as 26388769 + 15626209 = 5137^2 + 3953^2 .

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 (42014977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52925 + ... + 53712.

Almost surely, 2^42014978 is an apocalyptic number.

42014978 is a deficient number, since it is larger than the sum of its proper divisors (21327994).

42014978 is a wasteful number, since it uses less digits than its factorization.

42014978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106836.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 42014978 is about 6481.8961731888. The cubic root of 42014978 is about 347.6439801548.

The spelling of 42014978 in words is "forty-two million, fourteen thousand, nine hundred seventy-eight".