30405141 has 48 divisors (see below), whose sum is σ = 49900032. Its totient is φ = 17712000.

The previous prime is 30405139. The next prime is 30405161. The reversal of 30405141 is 14150403.

It is a happy number.

It is not a de Polignac number, because 30405141 - 2¹ = 30405139 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30405101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300991 + ... + 301091.

It is an arithmetic number, because the mean of its divisors is an integer number (1039584).

Almost surely, 2^30405141 is an apocalyptic number.

30405141 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30405141 is a deficient number, since it is larger than the sum of its proper divisors (19494891).

30405141 is a wasteful number, since it uses less digits than its factorization.

30405141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30405141 is about 5514.0856903026. The cubic root of 30405141 is about 312.1157423143.

Adding to 30405141 its reverse (14150403), we get a palindrome (44555544).

The spelling of 30405141 in words is "thirty million, four hundred five thousand, one hundred forty-one".