42423512 has 16 divisors (see below), whose sum is σ = 80634840. Its totient is φ = 20920896.

The previous prime is 42423509. The next prime is 42423527. The reversal of 42423512 is 21532424.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35738 + ... + 36905.

Almost surely, 2^42423512 is an apocalyptic number.

It is an amenable number.

42423512 is a deficient number, since it is larger than the sum of its proper divisors (38211328).

42423512 is a wasteful number, since it uses less digits than its factorization.

42423512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72722 (or 72718 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42423512 is about 6513.3334015694. Note that the first 3 decimals coincide. The cubic root of 42423512 is about 348.7671235110.

Adding to 42423512 its reverse (21532424), we get a palindrome (63955936).

The spelling of 42423512 in words is "forty-two million, four hundred twenty-three thousand, five hundred twelve".