42440046 has 16 divisors (see below), whose sum is σ = 92596608. Its totient is φ = 12860600.

The previous prime is 42440039. The next prime is 42440051. The reversal of 42440046 is 64004424.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42439998 and 42440025.

It is a congruent number.

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, 321450 + ... + 321581.

It is an arithmetic number, because the mean of its divisors is an integer number (5787288).

Almost surely, 2^42440046 is an apocalyptic number.

42440046 is an abundant number, since it is smaller than the sum of its proper divisors (50156562).

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

42440046 is a wasteful number, since it uses less digits than its factorization.

42440046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643047.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 42440046 is about 6514.6025204919. The cubic root of 42440046 is about 348.8124267432.

It can be divided in two parts, 424 and 40046, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 42440046 in words is "forty-two million, four hundred forty thousand, forty-six".