330405442 has 8 divisors (see below), whose sum is σ = 517156416. Its totient is φ = 158019972.

The previous prime is 330405433. The next prime is 330405461. The reversal of 330405442 is 244504033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×330405442⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3591318 + ... + 3591409.

It is an arithmetic number, because the mean of its divisors is an integer number (64644552).

Almost surely, 2^330405442 is an apocalyptic number.

330405442 is a deficient number, since it is larger than the sum of its proper divisors (186750974).

330405442 is a wasteful number, since it uses less digits than its factorization.

330405442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182752.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 330405442 is about 18177.0581228096. The cubic root of 330405442 is about 691.3252148361.

Adding to 330405442 its reverse (244504033), we get a palindrome (574909475).

The spelling of 330405442 in words is "three hundred thirty million, four hundred five thousand, four hundred forty-two".