2021043454 has 8 divisors (see below), whose sum is σ = 3053693808. Its totient is φ = 1003145520.

The previous prime is 2021043439. The next prime is 2021043457. The reversal of 2021043454 is 4543401202.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021043457) 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, 3687762 + ... + 3688309.

It is an arithmetic number, because the mean of its divisors is an integer number (381711726).

Almost surely, 2^2021043454 is an apocalyptic number.

2021043454 is a deficient number, since it is larger than the sum of its proper divisors (1032650354).

2021043454 is a wasteful number, since it uses less digits than its factorization.

2021043454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376210.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2021043454 is about 44956.0168831715. The cubic root of 2021043454 is about 1264.3244903267.

Adding to 2021043454 its reverse (4543401202), we get a palindrome (6564444656).

The spelling of 2021043454 in words is "two billion, twenty-one million, forty-three thousand, four hundred fifty-four".