30421105 has 32 divisors (see below), whose sum is σ = 43319808. Its totient is φ = 20217600.

The previous prime is 30421051. The next prime is 30421117. The reversal of 30421105 is 50112403.

It is not a de Polignac number, because 30421105 - 2⁷ = 30420977 is a prime.

It is a Duffinian 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, 112120 + ... + 112390.

It is an arithmetic number, because the mean of its divisors is an integer number (1353744).

Almost surely, 2^30421105 is an apocalyptic number.

It is an amenable number.

30421105 is a deficient number, since it is larger than the sum of its proper divisors (12898703).

30421105 is a wasteful number, since it uses less digits than its factorization.

30421105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30421105 is about 5515.5330658061. The cubic root of 30421105 is about 312.1703574635.

Adding to 30421105 its reverse (50112403), we get a palindrome (80533508).

The spelling of 30421105 in words is "thirty million, four hundred twenty-one thousand, one hundred five".