42112647 has 12 divisors (see below), whose sum is σ = 61457760. Its totient is φ = 27785088.

The previous prime is 42112643. The next prime is 42112661. The reversal of 42112647 is 74621124.

42112647 is a `hidden beast` number, since 4 + 2 + 1 + 12 + 647 = 666.

It is not a de Polignac number, because 42112647 - 2² = 42112643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42112647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42112643) 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 11 ways as a sum of consecutive naturals, for example, 23247 + ... + 24992.

It is an arithmetic number, because the mean of its divisors is an integer number (5121480).

Almost surely, 2^42112647 is an apocalyptic number.

42112647 is a deficient number, since it is larger than the sum of its proper divisors (19345113).

42112647 is a wasteful number, since it uses less digits than its factorization.

42112647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48342 (or 48339 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 42112647 is about 6489.4257835343. The cubic root of 42112647 is about 347.9131521288.

The spelling of 42112647 in words is "forty-two million, one hundred twelve thousand, six hundred forty-seven".