42543238 has 24 divisors (see below), whose sum is σ = 67687200. Its totient is φ = 20049744.

The previous prime is 42543187. The next prime is 42543269. The reversal of 42543238 is 83234524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83328 + ... + 83836.

It is an arithmetic number, because the mean of its divisors is an integer number (2820300).

Almost surely, 2^42543238 is an apocalyptic number.

42543238 is a deficient number, since it is larger than the sum of its proper divisors (25143962).

42543238 is a wasteful number, since it uses less digits than its factorization.

42543238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 613 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 42543238 is about 6522.5177654032. The cubic root of 42543238 is about 349.0949077274.

The spelling of 42543238 in words is "forty-two million, five hundred forty-three thousand, two hundred thirty-eight".