30042522 has 16 divisors (see below), whose sum is σ = 66761280. Its totient is φ = 10014156.

The previous prime is 30042499. The next prime is 30042527. The reversal of 30042522 is 22524003.

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

It is a junction number, because it is equal to n+sod(n) for n = 30042495 and 30042504.

It is not an unprimeable number, because it can be changed into a prime (30042527) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 278118 + ... + 278225.

It is an arithmetic number, because the mean of its divisors is an integer number (4172580).

Almost surely, 2^30042522 is an apocalyptic number.

30042522 is an abundant number, since it is smaller than the sum of its proper divisors (36718758).

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

30042522 is a wasteful number, since it uses less digits than its factorization.

30042522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556354 (or 556348 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30042522 is about 5481.1059103068. The cubic root of 30042522 is about 310.8699876673.

Adding to 30042522 its reverse (22524003), we get a palindrome (52566525).

The spelling of 30042522 in words is "thirty million, forty-two thousand, five hundred twenty-two".