6429343021 has 4 divisors (see below), whose sum is σ = 6433447552. Its totient is φ = 6425238492.

The previous prime is 6429343009. The next prime is 6429343061. The reversal of 6429343021 is 1203439246.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1203439246 = 2 ⋅601719623.

It is a cyclic number.

It is not a de Polignac number, because 6429343021 - 2⁵ = 6429342989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6429343061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049915 + ... + 2053048.

It is an arithmetic number, because the mean of its divisors is an integer number (1608361888).

Almost surely, 2^6429343021 is an apocalyptic number.

It is an amenable number.

6429343021 is a deficient number, since it is larger than the sum of its proper divisors (4104531).

6429343021 is a wasteful number, since it uses less digits than its factorization.

6429343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104530.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6429343021 is about 80183.1841535368. The cubic root of 6429343021 is about 1859.4686713165.

The spelling of 6429343021 in words is "six billion, four hundred twenty-nine million, three hundred forty-three thousand, twenty-one".