123420550210 has 16 divisors (see below), whose sum is σ = 222169663800. Its totient is φ = 49365403776.

The previous prime is 123420550163. The next prime is 123420550229. The reversal of 123420550210 is 12055024321.

It can be written as a sum of positive squares in 4 ways, for example, as 122841137169 + 579413041 = 350487^2 + 24071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163155 + ... + 522934.

Almost surely, 2^123420550210 is an apocalyptic number.

123420550210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123420550210 is a deficient number, since it is larger than the sum of its proper divisors (98749113590).

123420550210 is a wasteful number, since it uses less digits than its factorization.

123420550210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704085.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 123420550210 its reverse (12055024321), we get a palindrome (135475574531).

The spelling of 123420550210 in words is "one hundred twenty-three billion, four hundred twenty million, five hundred fifty thousand, two hundred ten".