4021321029 has 16 divisors (see below), whose sum is σ = 5873679360. Its totient is φ = 2426962160.

The previous prime is 4021321027. The next prime is 4021321043. The reversal of 4021321029 is 9201231204.

It is a cyclic number.

It is not a de Polignac number, because 4021321029 - 2¹ = 4021321027 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021321021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247047 + ... + 262820.

It is an arithmetic number, because the mean of its divisors is an integer number (367104960).

Almost surely, 2^4021321029 is an apocalyptic number.

It is an amenable number.

4021321029 is a deficient number, since it is larger than the sum of its proper divisors (1852358331).

4021321029 is a wasteful number, since it uses less digits than its factorization.

4021321029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510120.

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

The square root of 4021321029 is about 63413.8867204968. The cubic root of 4021321029 is about 1590.2164742247.

The spelling of 4021321029 in words is "four billion, twenty-one million, three hundred twenty-one thousand, twenty-nine".