40442030 has 16 divisors (see below), whose sum is σ = 72870624. Its totient is φ = 16160160.

The previous prime is 40442009. The next prime is 40442057. The reversal of 40442030 is 3024404.

It is a Curzon number.

It is a zygodrome in base 3.

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, 14120 + ... + 16740.

It is an arithmetic number, because the mean of its divisors is an integer number (4554414).

Almost surely, 2^40442030 is an apocalyptic number.

40442030 is a deficient number, since it is larger than the sum of its proper divisors (32428594).

40442030 is a wasteful number, since it uses less digits than its factorization.

40442030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40442030 is about 6359.4048463673. The cubic root of 40442030 is about 343.2503449363.

Adding to 40442030 its reverse (3024404), we get a palindrome (43466434).

The spelling of 40442030 in words is "forty million, four hundred forty-two thousand, thirty".