6729442 has 8 divisors (see below), whose sum is σ = 10187100. Its totient is φ = 3333744.

The previous prime is 6729427. The next prime is 6729461. The reversal of 6729442 is 2449276.

It can be written as a sum of positive squares in 2 ways, for example, as 6507601 + 221841 = 2551^2 + 471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 6⁸ + 7⁴ + 2³ + 9⁷ + 4⁴ + 4⁹ + 2¹¹ .

It is a junction number, because it is equal to n+sod(n) for n = 6729398 and 6729407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15217 + ... + 15652.

Almost surely, 2^6729442 is an apocalyptic number.

6729442 is a deficient number, since it is larger than the sum of its proper divisors (3457658).

6729442 is a wasteful number, since it uses less digits than its factorization.

6729442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30980.

The product of its digits is 24192, while the sum is 34.

The square root of 6729442 is about 2594.1168053887. The cubic root of 6729442 is about 188.7960997291.

The spelling of 6729442 in words is "six million, seven hundred twenty-nine thousand, four hundred forty-two".