42839234 has 4 divisors (see below), whose sum is σ = 64258854. Its totient is φ = 21419616.

The previous prime is 42839207. The next prime is 42839239. The reversal of 42839234 is 43293824.

It is a happy number.

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., 42837025 + 2209 = 6545^2 + 47^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42839194 and 42839203.

It is not an unprimeable number, because it can be changed into a prime (42839239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10709807 + ... + 10709810.

Almost surely, 2^42839234 is an apocalyptic number.

42839234 is a deficient number, since it is larger than the sum of its proper divisors (21419620).

42839234 is a wasteful number, since it uses less digits than its factorization.

42839234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21419619.

The product of its digits is 41472, while the sum is 35.

The square root of 42839234 is about 6545.1687525991. The cubic root of 42839234 is about 349.9026504766.

The spelling of 42839234 in words is "forty-two million, eight hundred thirty-nine thousand, two hundred thirty-four".