42243132 has 12 divisors (see below), whose sum is σ = 98567336. Its totient is φ = 14081040.

The previous prime is 42243109. The next prime is 42243143. The reversal of 42243132 is 23134224.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 42243099 and 42243108.

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, 1760119 + ... + 1760142.

Almost surely, 2^42243132 is an apocalyptic number.

It is an amenable number.

42243132 is an abundant number, since it is smaller than the sum of its proper divisors (56324204).

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

42243132 is a wasteful number, since it uses less digits than its factorization.

42243132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520268 (or 3520266 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 42243132 is about 6499.4716708360. The cubic root of 42243132 is about 348.2721150834.

Adding to 42243132 its reverse (23134224), we get a palindrome (65377356).

The spelling of 42243132 in words is "forty-two million, two hundred forty-three thousand, one hundred thirty-two".