123436242 has 12 divisors (see below), whose sum is σ = 267445230. Its totient is φ = 41145408.

The previous prime is 123436237. The next prime is 123436259. The reversal of 123436242 is 242634321.

123436242 is a `hidden beast` number, since 1 + 2 + 34 + 3 + 624 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98426241 + 25010001 = 9921^2 + 5001^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3428767 + ... + 3428802.

Almost surely, 2^123436242 is an apocalyptic number.

123436242 is an abundant number, since it is smaller than the sum of its proper divisors (144008988).

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

123436242 is a wasteful number, since it uses less digits than its factorization.

123436242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857577 (or 6857574 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 123436242 is about 11110.1864070771. The cubic root of 123436242 is about 497.9062338584.

The spelling of 123436242 in words is "one hundred twenty-three million, four hundred thirty-six thousand, two hundred forty-two".