4021254543 has 8 divisors (see below), whose sum is σ = 5379138688. Its totient is φ = 2672103384.

The previous prime is 4021254541. The next prime is 4021254547. The reversal of 4021254543 is 3454521204.

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

It is not a de Polignac number, because 4021254543 - 2¹ = 4021254541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4021254543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021254541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2182171 + ... + 2184012.

It is an arithmetic number, because the mean of its divisors is an integer number (672392336).

Almost surely, 2^4021254543 is an apocalyptic number.

4021254543 is a deficient number, since it is larger than the sum of its proper divisors (1357884145).

4021254543 is a wasteful number, since it uses less digits than its factorization.

4021254543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366493.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 4021254543 is about 63413.3624956129. The cubic root of 4021254543 is about 1590.2077102958.

Adding to 4021254543 its reverse (3454521204), we get a palindrome (7475775747).

The spelling of 4021254543 in words is "four billion, twenty-one million, two hundred fifty-four thousand, five hundred forty-three".