42347047 has 8 divisors (see below), whose sum is σ = 44740800. Its totient is φ = 40015584.

The previous prime is 42347033. The next prime is 42347059. The reversal of 42347047 is 74074324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42347047 - 2⁷ = 42346919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42347087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14172 + ... + 16897.

It is an arithmetic number, because the mean of its divisors is an integer number (5592600).

Almost surely, 2^42347047 is an apocalyptic number.

42347047 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

42347047 is a deficient number, since it is larger than the sum of its proper divisors (2393753).

42347047 is a wasteful number, since it uses less digits than its factorization.

42347047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31145.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 42347047 is about 6507.4608719531. The cubic root of 42347047 is about 348.5574558408.

The spelling of 42347047 in words is "forty-two million, three hundred forty-seven thousand, forty-seven".