123445130 has 8 divisors (see below), whose sum is σ = 222201252. Its totient is φ = 49378048.

The previous prime is 123445123. The next prime is 123445181. The reversal of 123445130 is 31544321.

It can be written as a sum of positive squares in 2 ways, for example, as 120055849 + 3389281 = 10957^2 + 1841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 123445096 and 123445105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6172247 + ... + 6172266.

Almost surely, 2^123445130 is an apocalyptic number.

123445130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123445130 is a deficient number, since it is larger than the sum of its proper divisors (98756122).

123445130 is a wasteful number, since it uses less digits than its factorization.

123445130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344520.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 123445130 is about 11110.5863931658. The cubic root of 123445130 is about 497.9181841152.

Adding to 123445130 its reverse (31544321), we get a palindrome (154989451).

It can be divided in two parts, 1234 and 45130, that added together give a palindrome (46364).

The spelling of 123445130 in words is "one hundred twenty-three million, four hundred forty-five thousand, one hundred thirty".