42051678 has 32 divisors (see below), whose sum is σ = 86486400. Its totient is φ = 13623456.

The previous prime is 42051677. The next prime is 42051689. The reversal of 42051678 is 87615024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42051671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100153 + ... + 100571.

It is an arithmetic number, because the mean of its divisors is an integer number (2702700).

Almost surely, 2^42051678 is an apocalyptic number.

42051678 is an abundant number, since it is smaller than the sum of its proper divisors (44434722).

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

42051678 is a wasteful number, since it uses less digits than its factorization.

42051678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 42051678 is about 6484.7265169782. The cubic root of 42051678 is about 347.7451728058.

The spelling of 42051678 in words is "forty-two million, fifty-one thousand, six hundred seventy-eight".