123049206 has 80 divisors (see below), whose sum is σ = 331752960. Its totient is φ = 33300720.

The previous prime is 123049193. The next prime is 123049211. The reversal of 123049206 is 602940321.

It is a super-2 number, since 2×123049206² = 30282214194460872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 123049206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18691 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (4146912).

Almost surely, 2^123049206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123049206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165876480).

123049206 is an abundant number, since it is smaller than the sum of its proper divisors (208703754).

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

123049206 is a wasteful number, since it uses less digits than its factorization.

123049206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751 (or 5742 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123049206 is about 11092.7546623911. The cubic root of 123049206 is about 497.3852917697.

Adding to 123049206 its reverse (602940321), we get a palindrome (725989527).

The spelling of 123049206 in words is "one hundred twenty-three million, forty-nine thousand, two hundred six".