42065478 has 96 divisors (see below), whose sum is σ = 114284352. Its totient is φ = 10886400.

The previous prime is 42065477. The next prime is 42065483. The reversal of 42065478 is 87456024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42065477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99708 + ... + 100128.

It is an arithmetic number, because the mean of its divisors is an integer number (1190462).

Almost surely, 2^42065478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42065478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57142176).

42065478 is an abundant number, since it is smaller than the sum of its proper divisors (72218874).

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

42065478 is a wasteful number, since it uses less digits than its factorization.

42065478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42065478 is about 6485.7904684009. The cubic root of 42065478 is about 347.7832082165.

The spelling of 42065478 in words is "forty-two million, sixty-five thousand, four hundred seventy-eight".