42431738 has 16 divisors (see below), whose sum is σ = 65340000. Its totient is φ = 20658672.

The previous prime is 42431737. The next prime is 42431759. The reversal of 42431738 is 83713424.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42431737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11213 + ... + 14511.

It is an arithmetic number, because the mean of its divisors is an integer number (4083750).

Almost surely, 2^42431738 is an apocalyptic number.

42431738 is a deficient number, since it is larger than the sum of its proper divisors (22908262).

42431738 is a wasteful number, since it uses less digits than its factorization.

42431738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its digits is 16128, while the sum is 32.

The square root of 42431738 is about 6513.9648448545. The cubic root of 42431738 is about 348.7896642580.

The spelling of 42431738 in words is "forty-two million, four hundred thirty-one thousand, seven hundred thirty-eight".