6442429 has 8 divisors (see below), whose sum is σ = 7387328. Its totient is φ = 5503680.

The previous prime is 6442427. The next prime is 6442433. The reversal of 6442429 is 9242446.

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

It is not a de Polignac number, because 6442429 - 2¹ = 6442427 is a prime.

It is a Duffinian number.

6442429 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6442429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 994 + ... + 3724.

It is an arithmetic number, because the mean of its divisors is an integer number (923416).

Almost surely, 2^6442429 is an apocalyptic number.

It is an amenable number.

6442429 is a deficient number, since it is larger than the sum of its proper divisors (944899).

6442429 is a wasteful number, since it uses less digits than its factorization.

6442429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its digits is 13824, while the sum is 31.

The square root of 6442429 is about 2538.1940430156. The cubic root of 6442429 is about 186.0729374410.

The spelling of 6442429 in words is "six million, four hundred forty-two thousand, four hundred twenty-nine".