4143621540 has 48 divisors (see below), whose sum is σ = 11885126400. Its totient is φ = 1078014720.

The previous prime is 4143621539. The next prime is 4143621551. The reversal of 4143621540 is 451263414.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4143621498 and 4143621507.

It is an unprimeable number.

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, 839740 + ... + 844659.

It is an arithmetic number, because the mean of its divisors is an integer number (247606800).

Almost surely, 2^4143621540 is an apocalyptic number.

It is an amenable number.

4143621540 is an abundant number, since it is smaller than the sum of its proper divisors (7741504860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4143621540 is a wasteful number, since it uses less digits than its factorization.

4143621540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684452 (or 1684450 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 4143621540 is about 64370.9681455856. The cubic root of 4143621540 is about 1606.1768447861.

Adding to 4143621540 its reverse (451263414), we get a palindrome (4594884954).

The spelling of 4143621540 in words is "four billion, one hundred forty-three million, six hundred twenty-one thousand, five hundred forty".