42983978 has 8 divisors (see below), whose sum is σ = 65568960. Its totient is φ = 21127660.

The previous prime is 42983971. The next prime is 42983981. The reversal of 42983978 is 87938924.

It is a happy number.

42983978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (42983971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182018 + ... + 182253.

It is an arithmetic number, because the mean of its divisors is an integer number (8196120).

Almost surely, 2^42983978 is an apocalyptic number.

42983978 is a deficient number, since it is larger than the sum of its proper divisors (22584982).

42983978 is a wasteful number, since it uses less digits than its factorization.

42983978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364332.

The product of its digits is 870912, while the sum is 50.

The square root of 42983978 is about 6556.2167444342. The cubic root of 42983978 is about 350.2962878861.

The spelling of 42983978 in words is "forty-two million, nine hundred eighty-three thousand, nine hundred seventy-eight".