124200504242 has 4 divisors (see below), whose sum is σ = 186300756366. Its totient is φ = 62100252120.

The previous prime is 124200504191. The next prime is 124200504247. The reversal of 124200504242 is 242405002421.

124200504242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242405002421 = 47 ⋅5157553243.

It can be written as a sum of positive squares in only one way, i.e., 69458075401 + 54742428841 = 263549^2 + 233971^2 .

It is not an unprimeable number, because it can be changed into a prime (124200504247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31050126059 + ... + 31050126062.

Almost surely, 2^124200504242 is an apocalyptic number.

124200504242 is a deficient number, since it is larger than the sum of its proper divisors (62100252124).

124200504242 is an equidigital number, since it uses as much as digits as its factorization.

124200504242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62100252123.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 124200504242 its reverse (242405002421), we get a palindrome (366605506663).

The spelling of 124200504242 in words is "one hundred twenty-four billion, two hundred million, five hundred four thousand, two hundred forty-two".