6421029 has 8 divisors (see below), whose sum is σ = 8706720. Its totient is φ = 4208016.

The previous prime is 6421021. The next prime is 6421039. The reversal of 6421029 is 9201246.

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

It is not a de Polignac number, because 6421029 - 2³ = 6421021 is a prime.

It is a super-2 number, since 2×6421029² = 82459226837682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17962 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (1088340).

Almost surely, 2^6421029 is an apocalyptic number.

It is an amenable number.

6421029 is a deficient number, since it is larger than the sum of its proper divisors (2285691).

6421029 is a wasteful number, since it uses less digits than its factorization.

6421029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36339.

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

The square root of 6421029 is about 2533.9749406811. The cubic root of 6421029 is about 185.8666809698.

The spelling of 6421029 in words is "six million, four hundred twenty-one thousand, twenty-nine".