30333042 has 40 divisors (see below), whose sum is σ = 68611356. Its totient is φ = 10015488.

The previous prime is 30333029. The next prime is 30333047. The reversal of 30333042 is 24033303.

It can be written as a sum of positive squares in 2 ways, for example, as 25310961 + 5022081 = 5031^2 + 2241^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30333047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17478 + ... + 19134.

Almost surely, 2^30333042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30333042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34305678).

30333042 is an abundant number, since it is smaller than the sum of its proper divisors (38278314).

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

30333042 is a wasteful number, since it uses less digits than its factorization.

30333042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 30333042 is about 5507.5440987794. The cubic root of 30333042 is about 311.8688428014.

Adding to 30333042 its reverse (24033303), we get a palindrome (54366345).

The spelling of 30333042 in words is "thirty million, three hundred thirty-three thousand, forty-two".