42072824 has 16 divisors (see below), whose sum is σ = 83527200. Its totient is φ = 19798912.

The previous prime is 42072817. The next prime is 42072827. The reversal of 42072824 is 42827024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42072827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154544 + ... + 154815.

It is an arithmetic number, because the mean of its divisors is an integer number (5220450).

Almost surely, 2^42072824 is an apocalyptic number.

It is an amenable number.

42072824 is a deficient number, since it is larger than the sum of its proper divisors (41454376).

42072824 is a wasteful number, since it uses less digits than its factorization.

42072824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309382 (or 309378 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 42072824 is about 6486.3567586126. The cubic root of 42072824 is about 347.8034517897.

Adding to 42072824 its reverse (42827024), we get a palindrome (84899848).

The spelling of 42072824 in words is "forty-two million, seventy-two thousand, eight hundred twenty-four".