123326490 has 32 divisors (see below), whose sum is σ = 338267520. Its totient is φ = 28188864.

The previous prime is 123326471. The next prime is 123326491. The reversal of 123326490 is 94623321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (123326491) 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 15 ways as a sum of consecutive naturals, for example, 293425 + ... + 293844.

It is an arithmetic number, because the mean of its divisors is an integer number (10570860).

Almost surely, 2^123326490 is an apocalyptic number.

123326490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123326490 is an abundant number, since it is smaller than the sum of its proper divisors (214941030).

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

123326490 is a wasteful number, since it uses less digits than its factorization.

123326490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587286.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 123326490 is about 11105.2460576072. The cubic root of 123326490 is about 497.7586207854.

The spelling of 123326490 in words is "one hundred twenty-three million, three hundred twenty-six thousand, four hundred ninety".