42641847 has 12 divisors (see below), whose sum is σ = 61742304. Its totient is φ = 28359360.

The previous prime is 42641843. The next prime is 42641849. The reversal of 42641847 is 74814624.

42641847 is a `hidden beast` number, since 4 + 2 + 641 + 8 + 4 + 7 = 666.

It is not a de Polignac number, because 42641847 - 2² = 42641843 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42641843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1618 + ... + 9375.

It is an arithmetic number, because the mean of its divisors is an integer number (5145192).

Almost surely, 2^42641847 is an apocalyptic number.

42641847 is a deficient number, since it is larger than the sum of its proper divisors (19100457).

42641847 is a wasteful number, since it uses less digits than its factorization.

42641847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11430 (or 11427 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 42641847 is about 6530.0725110829. The cubic root of 42641847 is about 349.3644165773.

The spelling of 42641847 in words is "forty-two million, six hundred forty-one thousand, eight hundred forty-seven".