68131424 has 12 divisors (see below), whose sum is σ = 134133804. Its totient is φ = 34065696.

The previous prime is 68131421. The next prime is 68131433. The reversal of 68131424 is 42413186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68131421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064522 + ... + 1064585.

It is an arithmetic number, because the mean of its divisors is an integer number (11177817).

Almost surely, 2^68131424 is an apocalyptic number.

It is an amenable number.

68131424 is a deficient number, since it is larger than the sum of its proper divisors (66002380).

68131424 is a wasteful number, since it uses less digits than its factorization.

68131424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129117 (or 2129109 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 68131424 is about 8254.1761551350. The cubic root of 68131424 is about 408.4282955963.

The spelling of 68131424 in words is "sixty-eight million, one hundred thirty-one thousand, four hundred twenty-four".