42521132 has 6 divisors (see below), whose sum is σ = 74411988. Its totient is φ = 21260564.

The previous prime is 42521117. The next prime is 42521153. The reversal of 42521132 is 23112524.

It is a super-2 number, since 2×42521132² = 3616093333122848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5315138 + ... + 5315145.

It is an arithmetic number, because the mean of its divisors is an integer number (12401998).

Almost surely, 2^42521132 is an apocalyptic number.

It is an amenable number.

42521132 is a deficient number, since it is larger than the sum of its proper divisors (31890856).

42521132 is a wasteful number, since it uses less digits than its factorization.

42521132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630287 (or 10630285 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 42521132 is about 6520.8229541983. The cubic root of 42521132 is about 349.0344325543.

Adding to 42521132 its reverse (23112524), we get a palindrome (65633656).

The spelling of 42521132 in words is "forty-two million, five hundred twenty-one thousand, one hundred thirty-two".