123342020 has 12 divisors (see below), whose sum is σ = 259018284. Its totient is φ = 49336800.

The previous prime is 123342013. The next prime is 123342047. The reversal of 123342020 is 20243321.

It can be written as a sum of positive squares in 2 ways, for example, as 47582404 + 75759616 = 6898^2 + 8704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123342020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3083531 + ... + 3083570.

It is an arithmetic number, because the mean of its divisors is an integer number (21584857).

Almost surely, 2^123342020 is an apocalyptic number.

123342020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123342020 is an abundant number, since it is smaller than the sum of its proper divisors (135676264).

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

123342020 is a wasteful number, since it uses less digits than its factorization.

123342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167110 (or 6167108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 123342020 is about 11105.9452546823. The cubic root of 123342020 is about 497.7795134769.

Adding to 123342020 its reverse (20243321), we get a palindrome (143585341).

The spelling of 123342020 in words is "one hundred twenty-three million, three hundred forty-two thousand, twenty".