42847231 has 8 divisors (see below), whose sum is σ = 49009664. Its totient is φ = 36695160.

The previous prime is 42847201. The next prime is 42847241. The reversal of 42847231 is 13274824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42847231 is a prime.

It is a super-2 number, since 2×42847231² = 3671770408734722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42847193 and 42847202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42847201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11146 + ... + 14488.

It is an arithmetic number, because the mean of its divisors is an integer number (6126208).

Almost surely, 2^42847231 is an apocalyptic number.

42847231 is a deficient number, since it is larger than the sum of its proper divisors (6162433).

42847231 is a wasteful number, since it uses less digits than its factorization.

42847231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181.

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

The square root of 42847231 is about 6545.7796327099. The cubic root of 42847231 is about 349.9244217762.

The spelling of 42847231 in words is "forty-two million, eight hundred forty-seven thousand, two hundred thirty-one".