42320047 has 16 divisors (see below), whose sum is σ = 53512704. Its totient is φ = 32508000.

The previous prime is 42320029. The next prime is 42320093. The reversal of 42320047 is 74002324.

It is a de Polignac number, because none of the positive numbers 2^k-42320047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 9337.

It is an arithmetic number, because the mean of its divisors is an integer number (3344544).

Almost surely, 2^42320047 is an apocalyptic number.

42320047 is a deficient number, since it is larger than the sum of its proper divisors (11192657).

42320047 is a wasteful number, since it uses less digits than its factorization.

42320047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42320047 is about 6505.3859993086. The cubic root of 42320047 is about 348.4833613226.

The spelling of 42320047 in words is "forty-two million, three hundred twenty thousand, forty-seven".