30240042 has 64 divisors (see below), whose sum is σ = 75043584. Its totient is φ = 7925760.

The previous prime is 30240017. The next prime is 30240053. The reversal of 30240042 is 24004203.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28758 + ... + 29790.

It is an arithmetic number, because the mean of its divisors is an integer number (1172556).

Almost surely, 2^30240042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30240042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37521792).

30240042 is an abundant number, since it is smaller than the sum of its proper divisors (44803542).

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

30240042 is a wasteful number, since it uses less digits than its factorization.

30240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30240042 is about 5499.0946527588. The cubic root of 30240042 is about 311.5497903469.

Adding to 30240042 its reverse (24004203), we get a palindrome (54244245).

The spelling of 30240042 in words is "thirty million, two hundred forty thousand, forty-two".