42040146 has 16 divisors (see below), whose sum is σ = 84547008. Its totient is φ = 13935600.

The previous prime is 42040121. The next prime is 42040151. The reversal of 42040146 is 64104024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18270 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (5284188).

Almost surely, 2^42040146 is an apocalyptic number.

42040146 is an abundant number, since it is smaller than the sum of its proper divisors (42506862).

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

42040146 is a wasteful number, since it uses less digits than its factorization.

42040146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38897.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42040146 is about 6483.8372897537. The cubic root of 42040146 is about 347.7133820493.

The spelling of 42040146 in words is "forty-two million, forty thousand, one hundred forty-six".