67131424 has 12 divisors (see below), whose sum is σ = 132165054. Its totient is φ = 33565696.

The previous prime is 67131413. The next prime is 67131481. The reversal of 67131424 is 42413176.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 219024 = 8180^2 + 468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67131392 and 67131401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048897 + ... + 1048960.

Almost surely, 2^67131424 is an apocalyptic number.

It is an amenable number.

67131424 is a deficient number, since it is larger than the sum of its proper divisors (65033630).

67131424 is a wasteful number, since it uses less digits than its factorization.

67131424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097867 (or 2097859 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 67131424 is about 8193.3768374218. The cubic root of 67131424 is about 406.4202012196.

The spelling of 67131424 in words is "sixty-seven million, one hundred thirty-one thousand, four hundred twenty-four".