42132730 has 16 divisors (see below), whose sum is σ = 76350600. Its totient is φ = 16739392.

The previous prime is 42132719. The next prime is 42132763. The reversal of 42132730 is 3723124.

42132730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22781529 + 19351201 = 4773^2 + 4399^2 .

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 7 ways as a sum of consecutive naturals, for example, 12649 + ... + 15628.

Almost surely, 2^42132730 is an apocalyptic number.

42132730 is a deficient number, since it is larger than the sum of its proper divisors (34217870).

42132730 is a wasteful number, since it uses less digits than its factorization.

42132730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28433.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 42132730 is about 6490.9729625072. The cubic root of 42132730 is about 347.9684484981.

Adding to 42132730 its reverse (3723124), we get a palindrome (45855854).

The spelling of 42132730 in words is "forty-two million, one hundred thirty-two thousand, seven hundred thirty".