42543252 has 24 divisors (see below), whose sum is σ = 110297600. Its totient is φ = 14181048.

The previous prime is 42543187. The next prime is 42543269. The reversal of 42543252 is 25234524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196852 + ... + 197067.

Almost surely, 2^42543252 is an apocalyptic number.

It is an amenable number.

42543252 is an abundant number, since it is smaller than the sum of its proper divisors (67754348).

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

42543252 is a wasteful number, since it uses less digits than its factorization.

42543252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393932 (or 393924 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 42543252 is about 6522.5188386083. The cubic root of 42543252 is about 349.0949460204.

Adding to 42543252 its reverse (25234524), we get a palindrome (67777776).

The spelling of 42543252 in words is "forty-two million, five hundred forty-three thousand, two hundred fifty-two".