42442836 has 12 divisors (see below), whose sum is σ = 99033312. Its totient is φ = 14147608.

The previous prime is 42442819. The next prime is 42442847. The reversal of 42442836 is 63824424.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 42442797 and 42442806.

It is a congruent number.

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, 1768440 + ... + 1768463.

It is an arithmetic number, because the mean of its divisors is an integer number (8252776).

Almost surely, 2^42442836 is an apocalyptic number.

It is an amenable number.

42442836 is an abundant number, since it is smaller than the sum of its proper divisors (56590476).

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

42442836 is a wasteful number, since it uses less digits than its factorization.

42442836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536910 (or 3536908 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 42442836 is about 6514.8166512957. The cubic root of 42442836 is about 348.8200701950.

The spelling of 42442836 in words is "forty-two million, four hundred forty-two thousand, eight hundred thirty-six".