123920610 has 64 divisors (see below), whose sum is σ = 326934144. Its totient is φ = 29811200.

The previous prime is 123920569. The next prime is 123920611. The reversal of 123920610 is 16029321.

It is not an unprimeable number, because it can be changed into a prime (123920611) 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 31 ways as a sum of consecutive naturals, for example, 43840 + ... + 46580.

It is an arithmetic number, because the mean of its divisors is an integer number (5108346).

Almost surely, 2^123920610 is an apocalyptic number.

123920610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123920610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163467072).

123920610 is an abundant number, since it is smaller than the sum of its proper divisors (203013534).

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

123920610 is a wasteful number, since it uses less digits than its factorization.

123920610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 123920610 is about 11131.9634386751. The cubic root of 123920610 is about 498.5566508288.

Adding to 123920610 its reverse (16029321), we get a palindrome (139949931).

The spelling of 123920610 in words is "one hundred twenty-three million, nine hundred twenty thousand, six hundred ten".