2034430021 has 8 divisors (see below), whose sum is σ = 2204881784. Its totient is φ = 1865972160.

The previous prime is 2034429983. The next prime is 2034430031. The reversal of 2034430021 is 1200344302.

It can be written as a sum of positive squares in 4 ways, for example, as 112572100 + 1921857921 = 10610^2 + 43839^2 .

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

It is not a de Polignac number, because 2034430021 - 2⁷ = 2034429893 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 (2034430031) 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, 496350 + ... + 500431.

It is an arithmetic number, because the mean of its divisors is an integer number (275610223).

Almost surely, 2^2034430021 is an apocalyptic number.

It is an amenable number.

2034430021 is a deficient number, since it is larger than the sum of its proper divisors (170451763).

2034430021 is a wasteful number, since it uses less digits than its factorization.

2034430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996951.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2034430021 is about 45104.6563117379. The cubic root of 2034430021 is about 1267.1098062236.

Adding to 2034430021 its reverse (1200344302), we get a palindrome (3234774323).

The spelling of 2034430021 in words is "two billion, thirty-four million, four hundred thirty thousand, twenty-one".