30126406 has 4 divisors (see below), whose sum is σ = 45189612. Its totient is φ = 15063202.

The previous prime is 30126391. The next prime is 30126409. The reversal of 30126406 is 60462103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60462103 = 13 ⋅4650931.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30126409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7531600 + ... + 7531603.

It is an arithmetic number, because the mean of its divisors is an integer number (11297403).

Almost surely, 2^30126406 is an apocalyptic number.

30126406 is a deficient number, since it is larger than the sum of its proper divisors (15063206).

30126406 is a wasteful number, since it uses less digits than its factorization.

30126406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15063205.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30126406 is about 5488.7526816208. The cubic root of 30126406 is about 311.1590533355.

Adding to 30126406 its reverse (60462103), we get a palindrome (90588509).

The spelling of 30126406 in words is "thirty million, one hundred twenty-six thousand, four hundred six".