2021434023 has 8 divisors (see below), whose sum is σ = 3080280448. Its totient is φ = 1155105144.

The previous prime is 2021434007. The next prime is 2021434027. The reversal of 2021434023 is 3204341202.

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

It is not a de Polignac number, because 2021434023 - 2⁴ = 2021434007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 96258763 = 2021434023 / (2 + 0 + 2 + 1 + 4 + 3 + 4 + 0 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021434027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48129361 + ... + 48129402.

It is an arithmetic number, because the mean of its divisors is an integer number (385035056).

Almost surely, 2^2021434023 is an apocalyptic number.

2021434023 is a deficient number, since it is larger than the sum of its proper divisors (1058846425).

2021434023 is an equidigital number, since it uses as much as digits as its factorization.

2021434023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96258773.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2021434023 is about 44960.3605746217. The cubic root of 2021434023 is about 1264.4059291407.

Adding to 2021434023 its reverse (3204341202), we get a palindrome (5225775225).

The spelling of 2021434023 in words is "two billion, twenty-one million, four hundred thirty-four thousand, twenty-three".