42011047 has 4 divisors (see below), whose sum is σ = 45242680. Its totient is φ = 38779416.

The previous prime is 42011017. The next prime is 42011083. The reversal of 42011047 is 74011024.

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

It is not a de Polignac number, because 42011047 - 2²³ = 33622439 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 (42011017) 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, 1615797 + ... + 1615822.

It is an arithmetic number, because the mean of its divisors is an integer number (11310670).

Almost surely, 2^42011047 is an apocalyptic number.

42011047 is a deficient number, since it is larger than the sum of its proper divisors (3231633).

42011047 is a wasteful number, since it uses less digits than its factorization.

42011047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231632.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 42011047 is about 6481.5929369253. The cubic root of 42011047 is about 347.6331377427.

The spelling of 42011047 in words is "forty-two million, eleven thousand, forty-seven".