123251229 has 12 divisors (see below), whose sum is σ = 180469276. Its totient is φ = 81041472.

The previous prime is 123251221. The next prime is 123251237. The reversal of 123251229 is 922152321.

It is a happy number.

123251229 is a `hidden beast` number, since 123 + 2 + 512 + 29 = 666.

It is an interprime number because it is at equal distance from previous prime (123251221) and next prime (123251237).

It can be written as a sum of positive squares in 2 ways, for example, as 53144100 + 70107129 = 7290^2 + 8373^2 .

It is not a de Polignac number, because 123251229 - 2³ = 123251221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123251221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93142 + ... + 94455.

Almost surely, 2^123251229 is an apocalyptic number.

It is an amenable number.

123251229 is a deficient number, since it is larger than the sum of its proper divisors (57218047).

123251229 is a wasteful number, since it uses less digits than its factorization.

123251229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187676 (or 187673 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 123251229 is about 11101.8570068255. The cubic root of 123251229 is about 497.6573464238.

The spelling of 123251229 in words is "one hundred twenty-three million, two hundred fifty-one thousand, two hundred twenty-nine".