42431006 has 4 divisors (see below), whose sum is σ = 63646512. Its totient is φ = 21215502.

The previous prime is 42431003. The next prime is 42431041. The reversal of 42431006 is 60013424.

It is a happy number.

42431006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607750 + ... + 10607753.

It is an arithmetic number, because the mean of its divisors is an integer number (15911628).

Almost surely, 2^42431006 is an apocalyptic number.

42431006 is a deficient number, since it is larger than the sum of its proper divisors (21215506).

42431006 is a wasteful number, since it uses less digits than its factorization.

42431006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21215505.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42431006 is about 6513.9086576341. The cubic root of 42431006 is about 348.7876585619.

The spelling of 42431006 in words is "forty-two million, four hundred thirty-one thousand, six".