42912078 has 16 divisors (see below), whose sum is σ = 93626496. Its totient is φ = 13003640.

The previous prime is 42912073. The next prime is 42912137. The reversal of 42912078 is 87021924.

It is a happy number.

42912078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42912071) 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 7 ways as a sum of consecutive naturals, for example, 325026 + ... + 325157.

It is an arithmetic number, because the mean of its divisors is an integer number (5851656).

Almost surely, 2^42912078 is an apocalyptic number.

42912078 is an abundant number, since it is smaller than the sum of its proper divisors (50714418).

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

42912078 is a wasteful number, since it uses less digits than its factorization.

42912078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650199.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42912078 is about 6550.7311042356. The cubic root of 42912078 is about 350.1008634473.

The spelling of 42912078 in words is "forty-two million, nine hundred twelve thousand, seventy-eight".