42134378 has 48 divisors (see below), whose sum is σ = 76416480. Its totient is φ = 17302560.

The previous prime is 42134377. The next prime is 42134383. The reversal of 42134378 is 87343124.

42134378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42134377) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 185501 + ... + 185727.

It is an arithmetic number, because the mean of its divisors is an integer number (1592010).

Almost surely, 2^42134378 is an apocalyptic number.

42134378 is a deficient number, since it is larger than the sum of its proper divisors (34282102).

42134378 is a wasteful number, since it uses less digits than its factorization.

42134378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 312 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 42134378 is about 6491.0999067955. The cubic root of 42134378 is about 347.9729853077.

The spelling of 42134378 in words is "forty-two million, one hundred thirty-four thousand, three hundred seventy-eight".