42443854 has 4 divisors (see below), whose sum is σ = 63665784. Its totient is φ = 21221926.

The previous prime is 42443801. The next prime is 42443857. The reversal of 42443854 is 45834424.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610962 + ... + 10610965.

It is an arithmetic number, because the mean of its divisors is an integer number (15916446).

Almost surely, 2^42443854 is an apocalyptic number.

42443854 is a deficient number, since it is larger than the sum of its proper divisors (21221930).

42443854 is a wasteful number, since it uses less digits than its factorization.

42443854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221929.

The product of its digits is 61440, while the sum is 34.

The square root of 42443854 is about 6514.8947804243. The cubic root of 42443854 is about 348.8228590127.

The spelling of 42443854 in words is "forty-two million, four hundred forty-three thousand, eight hundred fifty-four".