42443378 has 16 divisors (see below), whose sum is σ = 67828320. Its totient is φ = 19861056.

The previous prime is 42443377. The next prime is 42443383. The reversal of 42443378 is 87334424.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42443377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3575 + ... + 9882.

It is an arithmetic number, because the mean of its divisors is an integer number (4239270).

Almost surely, 2^42443378 is an apocalyptic number.

42443378 is a deficient number, since it is larger than the sum of its proper divisors (25384942).

42443378 is a wasteful number, since it uses less digits than its factorization.

42443378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561.

The product of its digits is 64512, while the sum is 35.

The square root of 42443378 is about 6514.8582486498. The cubic root of 42443378 is about 348.8215550131.

The spelling of 42443378 in words is "forty-two million, four hundred forty-three thousand, three hundred seventy-eight".