123988226 has 8 divisors (see below), whose sum is σ = 186061260. Its totient is φ = 61967808.

The previous prime is 123988219. The next prime is 123988229. The reversal of 123988226 is 622889321.

It is a Cunningham number, because it is equal to 11135²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 123988225 + 1 = 11135^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (123988229) 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 3 ways as a sum of consecutive naturals, for example, 6611 + ... + 17078.

Almost surely, 2^123988226 is an apocalyptic number.

123988226 is a deficient number, since it is larger than the sum of its proper divisors (62073034).

123988226 is a wasteful number, since it uses less digits than its factorization.

123988226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26308.

The product of its digits is 82944, while the sum is 41.

The square root of 123988226 is about 11135.0000449035. Note that the first 4 decimals coincide. The cubic root of 123988226 is about 498.6473117692.

The spelling of 123988226 in words is "one hundred twenty-three million, nine hundred eighty-eight thousand, two hundred twenty-six".