42123504 has 20 divisors (see below), whose sum is σ = 108819176. Its totient is φ = 14041152.

The previous prime is 42123493. The next prime is 42123509. The reversal of 42123504 is 40532124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42123509) 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, 438739 + ... + 438834.

Almost surely, 2^42123504 is an apocalyptic number.

It is an amenable number.

42123504 is an abundant number, since it is smaller than the sum of its proper divisors (66695672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42123504 is a wasteful number, since it uses less digits than its factorization.

42123504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877584 (or 877578 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42123504 is about 6490.2622443165. The cubic root of 42123504 is about 347.9430478870.

Adding to 42123504 its reverse (40532124), we get a palindrome (82655628).

The spelling of 42123504 in words is "forty-two million, one hundred twenty-three thousand, five hundred four".