42443794 has 4 divisors (see below), whose sum is σ = 63665694. Its totient is φ = 21221896.

The previous prime is 42443783. The next prime is 42443801. The reversal of 42443794 is 49734424.

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

It can be written as a sum of positive squares in only one way, i.e., 34963569 + 7480225 = 5913^2 + 2735^2 .

It is a super-2 number, since 2×42443794² = 3602951298228872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610947 + ... + 10610950.

Almost surely, 2^42443794 is an apocalyptic number.

42443794 is a deficient number, since it is larger than the sum of its proper divisors (21221900).

42443794 is a wasteful number, since it uses less digits than its factorization.

42443794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221899.

The product of its digits is 96768, while the sum is 37.

The square root of 42443794 is about 6514.8901755901. The cubic root of 42443794 is about 348.8226946435.

The spelling of 42443794 in words is "forty-two million, four hundred forty-three thousand, seven hundred ninety-four".