442540036 has 12 divisors (see below), whose sum is σ = 789057612. Its totient is φ = 217095008.

The previous prime is 442540013. The next prime is 442540051. The reversal of 442540036 is 630045244.

It can be written as a sum of positive squares in 2 ways, for example, as 351337536 + 91202500 = 18744^2 + 9550^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442539986 and 442540013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043515 + ... + 1043938.

It is an arithmetic number, because the mean of its divisors is an integer number (65754801).

Almost surely, 2^442540036 is an apocalyptic number.

It is an amenable number.

442540036 is a deficient number, since it is larger than the sum of its proper divisors (346517576).

442540036 is a wasteful number, since it uses less digits than its factorization.

442540036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087510 (or 2087508 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 442540036 is about 21036.6355675046. The cubic root of 442540036 is about 762.0512660608.

The spelling of 442540036 in words is "four hundred forty-two million, five hundred forty thousand, thirty-six".