30020542 has 8 divisors (see below), whose sum is σ = 46247976. Its totient is φ = 14604552.

The previous prime is 30020527. The next prime is 30020561. The reversal of 30020542 is 24502003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202768 + ... + 202915.

It is an arithmetic number, because the mean of its divisors is an integer number (5780997).

Almost surely, 2^30020542 is an apocalyptic number.

30020542 is a deficient number, since it is larger than the sum of its proper divisors (16227434).

30020542 is a wasteful number, since it uses less digits than its factorization.

30020542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405722.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30020542 is about 5479.1004736179. The cubic root of 30020542 is about 310.7941552700.

Adding to 30020542 its reverse (24502003), we get a palindrome (54522545).

The spelling of 30020542 in words is "thirty million, twenty thousand, five hundred forty-two".