30123054 has 96 divisors (see below), whose sum is σ = 76265280. Its totient is φ = 8515584.

The previous prime is 30123053. The next prime is 30123061. The reversal of 30123054 is 45032103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123053) 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 47 ways as a sum of consecutive naturals, for example, 155982 + ... + 156174.

It is an arithmetic number, because the mean of its divisors is an integer number (794430).

Almost surely, 2^30123054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30123054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38132640).

30123054 is an abundant number, since it is smaller than the sum of its proper divisors (46142226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30123054 is a wasteful number, since it uses less digits than its factorization.

30123054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30123054 is about 5488.4473214198. The cubic root of 30123054 is about 311.1475125869.

Adding to 30123054 its reverse (45032103), we get a palindrome (75155157).

The spelling of 30123054 in words is "thirty million, one hundred twenty-three thousand, fifty-four".