30513042 has 48 divisors (see below), whose sum is σ = 78848640. Its totient is φ = 8338176.

The previous prime is 30512987. The next prime is 30513047. The reversal of 30513042 is 24031503.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30513047) 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 23 ways as a sum of consecutive naturals, for example, 2367 + ... + 8162.

It is an arithmetic number, because the mean of its divisors is an integer number (1642680).

Almost surely, 2^30513042 is an apocalyptic number.

30513042 is an abundant number, since it is smaller than the sum of its proper divisors (48335598).

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

30513042 is a wasteful number, since it uses less digits than its factorization.

30513042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10567 (or 10564 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30513042 is about 5523.8611495945. The cubic root of 30513042 is about 312.4845159261.

Adding to 30513042 its reverse (24031503), we get a palindrome (54544545).

The spelling of 30513042 in words is "thirty million, five hundred thirteen thousand, forty-two".