4002420043 has 4 divisors (see below), whose sum is σ = 4028926288. Its totient is φ = 3975913800.

The previous prime is 4002420017. The next prime is 4002420047. The reversal of 4002420043 is 3400242004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4002420043 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 4002420043.

It is not an unprimeable number, because it can be changed into a prime (4002420047) 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, 13252896 + ... + 13253197.

It is an arithmetic number, because the mean of its divisors is an integer number (1007231572).

Almost surely, 2^4002420043 is an apocalyptic number.

4002420043 is a deficient number, since it is larger than the sum of its proper divisors (26506245).

4002420043 is a wasteful number, since it uses less digits than its factorization.

4002420043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26506244.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4002420043 is about 63264.6824302470. The cubic root of 4002420043 is about 1587.7211189959.

Adding to 4002420043 its reverse (3400242004), we get a palindrome (7402662047).

The spelling of 4002420043 in words is "four billion, two million, four hundred twenty thousand, forty-three".