42907047 has 4 divisors (see below), whose sum is σ = 57209400. Its totient is φ = 28604696.

The previous prime is 42907027. The next prime is 42907049. The reversal of 42907047 is 74070924.

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 42907047 - 2¹⁹ = 42382759 is a prime.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 42906999 and 42907017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42907049) 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, 7151172 + ... + 7151177.

It is an arithmetic number, because the mean of its divisors is an integer number (14302350).

Almost surely, 2^42907047 is an apocalyptic number.

42907047 is a deficient number, since it is larger than the sum of its proper divisors (14302353).

42907047 is a wasteful number, since it uses less digits than its factorization.

42907047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302352.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 42907047 is about 6550.3470900403. The cubic root of 42907047 is about 350.0871810035.

The spelling of 42907047 in words is "forty-two million, nine hundred seven thousand, forty-seven".