442906040 has 16 divisors (see below), whose sum is σ = 996538680. Its totient is φ = 177162400.

The previous prime is 442906039. The next prime is 442906043. The reversal of 442906040 is 40609244.

It is a junction number, because it is equal to n+sod(n) for n = 442905994 and 442906012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442906043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5536286 + ... + 5536365.

Almost surely, 2^442906040 is an apocalyptic number.

442906040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442906040 is an abundant number, since it is smaller than the sum of its proper divisors (553632640).

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

442906040 is a wasteful number, since it uses less digits than its factorization.

442906040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11072662 (or 11072658 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 442906040 is about 21045.3329743200. The cubic root of 442906040 is about 762.2612937284.

The spelling of 442906040 in words is "four hundred forty-two million, nine hundred six thousand, forty".