42121132 has 12 divisors (see below), whose sum is σ = 74044096. Its totient is φ = 20965680.

The previous prime is 42121099. The next prime is 42121147. The reversal of 42121132 is 23112124.

42121132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42121132² = 3548379521922848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22719 + ... + 24502.

Almost surely, 2^42121132 is an apocalyptic number.

It is an amenable number.

42121132 is a deficient number, since it is larger than the sum of its proper divisors (31922964).

42121132 is a wasteful number, since it uses less digits than its factorization.

42121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47448 (or 47446 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 42121132 is about 6490.0795064467. The cubic root of 42121132 is about 347.9365168032.

Adding to 42121132 its reverse (23112124), we get a palindrome (65233256).

The spelling of 42121132 in words is "forty-two million, one hundred twenty-one thousand, one hundred thirty-two".