42843634 has 4 divisors (see below), whose sum is σ = 64265454. Its totient is φ = 21421816.

The previous prime is 42843607. The next prime is 42843659. The reversal of 42843634 is 43634824.

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., 31304025 + 11539609 = 5595^2 + 3397^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42843634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10710907 + ... + 10710910.

Almost surely, 2^42843634 is an apocalyptic number.

42843634 is a deficient number, since it is larger than the sum of its proper divisors (21421820).

42843634 is a wasteful number, since it uses less digits than its factorization.

42843634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21421819.

The product of its digits is 55296, while the sum is 34.

The square root of 42843634 is about 6545.5048697560. The cubic root of 42843634 is about 349.9146295186.

The spelling of 42843634 in words is "forty-two million, eight hundred forty-three thousand, six hundred thirty-four".