42239236 has 24 divisors (see below), whose sum is σ = 82175744. Its totient is φ = 18865440.

The previous prime is 42239233. The next prime is 42239273. The reversal of 42239236 is 63293224.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 42239198 and 42239207.

It is not an unprimeable number, because it can be changed into a prime (42239231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11490 + ... + 14713.

Almost surely, 2^42239236 is an apocalyptic number.

It is an amenable number.

42239236 is a deficient number, since it is larger than the sum of its proper divisors (39936508).

42239236 is a wasteful number, since it uses less digits than its factorization.

42239236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26251 (or 26249 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 42239236 is about 6499.1719472561. The cubic root of 42239236 is about 348.2614079395.

The spelling of 42239236 in words is "forty-two million, two hundred thirty-nine thousand, two hundred thirty-six".