6429021 has 8 divisors (see below), whose sum is σ = 8583744. Its totient is φ = 4280160.

The previous prime is 6429019. The next prime is 6429047. The reversal of 6429021 is 1209246.

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

It is not a de Polignac number, because 6429021 - 2¹ = 6429019 is a prime.

It is a super-2 number, since 2×6429021² = 82664622036882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6428982 and 6429000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6429221) 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 in 7 ways as a sum of consecutive naturals, for example, 3601 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (1072968).

Almost surely, 2^6429021 is an apocalyptic number.

It is an amenable number.

6429021 is a deficient number, since it is larger than the sum of its proper divisors (2154723).

6429021 is a wasteful number, since it uses less digits than its factorization.

6429021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6429021 is about 2535.5514193169. The cubic root of 6429021 is about 185.9437626260.

The spelling of 6429021 in words is "six million, four hundred twenty-nine thousand, twenty-one".