124642253268 has 36 divisors (see below), whose sum is σ = 339303912948. Its totient is φ = 38351462400.

The previous prime is 124642253261. The next prime is 124642253273. The reversal of 124642253268 is 862352246421.

It is a happy number.

124642253268 is a `hidden beast` number, since 12 + 4 + 6 + 42 + 2 + 532 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21782217744 + 102860035524 = 147588^2 + 320718^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124642253261) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 133164333 + ... + 133165268.

It is an arithmetic number, because the mean of its divisors is an integer number (9425108693).

Almost surely, 2^124642253268 is an apocalyptic number.

124642253268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

124642253268 is an abundant number, since it is smaller than the sum of its proper divisors (214661659680).

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

124642253268 is a wasteful number, since it uses less digits than its factorization.

124642253268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266329624 (or 266329619 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

Adding to 124642253268 its reverse (862352246421), we get a palindrome (986994499689).

The spelling of 124642253268 in words is "one hundred twenty-four billion, six hundred forty-two million, two hundred fifty-three thousand, two hundred sixty-eight".