42817342 has 4 divisors (see below), whose sum is σ = 64226016. Its totient is φ = 21408670.

The previous prime is 42817321. The next prime is 42817349. The reversal of 42817342 is 24371824.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42817349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10704334 + ... + 10704337.

It is an arithmetic number, because the mean of its divisors is an integer number (16056504).

Almost surely, 2^42817342 is an apocalyptic number.

42817342 is a deficient number, since it is larger than the sum of its proper divisors (21408674).

42817342 is a wasteful number, since it uses less digits than its factorization.

42817342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21408673.

The product of its digits is 10752, while the sum is 31.

The square root of 42817342 is about 6543.4961603106. The cubic root of 42817342 is about 349.8430371011.

The spelling of 42817342 in words is "forty-two million, eight hundred seventeen thousand, three hundred forty-two".