42646040 has 32 divisors (see below), whose sum is σ = 96273360. Its totient is φ = 17001600.

The previous prime is 42646033. The next prime is 42646063. The reversal of 42646040 is 4064624.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11630 + ... + 14850.

Almost surely, 2^42646040 is an apocalyptic number.

42646040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42646040 is an abundant number, since it is smaller than the sum of its proper divisors (53627320).

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

42646040 is a wasteful number, since it uses less digits than its factorization.

42646040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563 (or 3559 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 42646040 is about 6530.3935562874. The cubic root of 42646040 is about 349.3758672772.

The spelling of 42646040 in words is "forty-two million, six hundred forty-six thousand, forty".