123030045 has 48 divisors (see below), whose sum is σ = 219024000. Its totient is φ = 63864960.

The previous prime is 123030043. The next prime is 123030049. The reversal of 123030045 is 540030321.

It is not a de Polignac number, because 123030045 - 2¹ = 123030043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030043) 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, 395440 + ... + 395750.

It is an arithmetic number, because the mean of its divisors is an integer number (4563000).

Almost surely, 2^123030045 is an apocalyptic number.

123030045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123030045 is a deficient number, since it is larger than the sum of its proper divisors (95993955).

123030045 is a wasteful number, since it uses less digits than its factorization.

123030045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 527 counting only the distinct ones).

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

The square root of 123030045 is about 11091.8909569108. The cubic root of 123030045 is about 497.3594731166.

Adding to 123030045 its reverse (540030321), we get a palindrome (663060366).

The spelling of 123030045 in words is "one hundred twenty-three million, thirty thousand, forty-five".