42054847 has 4 divisors (see below), whose sum is σ = 44268280. Its totient is φ = 39841416.

The previous prime is 42054841. The next prime is 42054851. The reversal of 42054847 is 74845024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42054847 - 2³ = 42054839 is a prime.

It is a super-2 number, since 2×42054847² = 3537220312386818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42054841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106688 + ... + 1106725.

It is an arithmetic number, because the mean of its divisors is an integer number (11067070).

Almost surely, 2^42054847 is an apocalyptic number.

42054847 is a deficient number, since it is larger than the sum of its proper divisors (2213433).

42054847 is a wasteful number, since it uses less digits than its factorization.

42054847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213432.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 42054847 is about 6484.9708557556. The cubic root of 42054847 is about 347.7539079053.

The spelling of 42054847 in words is "forty-two million, fifty-four thousand, eight hundred forty-seven".