30534042 has 128 divisors (see below), whose sum is σ = 82114560. Its totient is φ = 7338240.

The previous prime is 30534029. The next prime is 30534073. The reversal of 30534042 is 24043503.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 576088 + ... + 576140.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

Almost surely, 2^30534042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30534042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41057280).

30534042 is an abundant number, since it is smaller than the sum of its proper divisors (51580518).

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

30534042 is a wasteful number, since it uses less digits than its factorization.

30534042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30534042 is about 5525.7616669560. The cubic root of 30534042 is about 312.5561865905.

Adding to 30534042 its reverse (24043503), we get a palindrome (54577545).

The spelling of 30534042 in words is "thirty million, five hundred thirty-four thousand, forty-two".