30042005 has 16 divisors (see below), whose sum is σ = 41291904. Its totient is φ = 20554560.

The previous prime is 30041989. The next prime is 30042011. The reversal of 30042005 is 50024003.

It is not a de Polignac number, because 30042005 - 2⁴ = 30041989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25070 + ... + 26240.

It is an arithmetic number, because the mean of its divisors is an integer number (2580744).

Almost surely, 2^30042005 is an apocalyptic number.

30042005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30042005 is a deficient number, since it is larger than the sum of its proper divisors (11249899).

30042005 is a wasteful number, since it uses less digits than its factorization.

30042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 30042005 is about 5481.0587480887. The cubic root of 30042005 is about 310.8682044093.

Adding to 30042005 its reverse (50024003), we get a palindrome (80066008).

The spelling of 30042005 in words is "thirty million, forty-two thousand, five".