30090123 has 20 divisors (see below), whose sum is σ = 51371760. Its totient is φ = 17194032.

The previous prime is 30090121. The next prime is 30090143. The reversal of 30090123 is 32109003.

It is not a de Polignac number, because 30090123 - 2¹ = 30090121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30090096 and 30090105.

It is not an unprimeable number, because it can be changed into a prime (30090121) 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 in 19 ways as a sum of consecutive naturals, for example, 25968 + ... + 27101.

It is an arithmetic number, because the mean of its divisors is an integer number (2568588).

Almost surely, 2^30090123 is an apocalyptic number.

30090123 is a deficient number, since it is larger than the sum of its proper divisors (21281637).

30090123 is an equidigital number, since it uses as much as digits as its factorization.

30090123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53088 (or 53079 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30090123 is about 5485.4464722573. The cubic root of 30090123 is about 311.0340874469.

Adding to 30090123 its reverse (32109003), we get a palindrome (62199126).

The spelling of 30090123 in words is "thirty million, ninety thousand, one hundred twenty-three".