42400146 has 32 divisors (see below), whose sum is σ = 89058240. Its totient is φ = 13438656.

The previous prime is 42400139. The next prime is 42400177. The reversal of 42400146 is 64100424.

42400146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 9840 + ... + 13476.

It is an arithmetic number, because the mean of its divisors is an integer number (2783070).

Almost surely, 2^42400146 is an apocalyptic number.

42400146 is an abundant number, since it is smaller than the sum of its proper divisors (46658094).

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

42400146 is a wasteful number, since it uses less digits than its factorization.

42400146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

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

The square root of 42400146 is about 6511.5394493161. The cubic root of 42400146 is about 348.7030804931.

The spelling of 42400146 in words is "forty-two million, four hundred thousand, one hundred forty-six".