42072678 has 24 divisors (see below), whose sum is σ = 94302000. Its totient is φ = 13540464.

The previous prime is 42072629. The next prime is 42072691. The reversal of 42072678 is 87627024.

42072678 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 2×42072678² = 3540220468183368, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 39778 + ... + 40821.

It is an arithmetic number, because the mean of its divisors is an integer number (3929250).

Almost surely, 2^42072678 is an apocalyptic number.

42072678 is an abundant number, since it is smaller than the sum of its proper divisors (52229322).

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

42072678 is a wasteful number, since it uses less digits than its factorization.

42072678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80636 (or 80633 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 42072678 is about 6486.3455042111. The cubic root of 42072678 is about 347.8030494765.

The spelling of 42072678 in words is "forty-two million, seventy-two thousand, six hundred seventy-eight".