4042420043 has 4 divisors (see below), whose sum is σ = 4043454408. Its totient is φ = 4041385680.

The previous prime is 4042420037. The next prime is 4042420097. The reversal of 4042420043 is 3400242404.

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

It is a cyclic number.

It is not a de Polignac number, because 4042420043 - 2²² = 4038225739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4042420013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 511298 + ... + 519143.

It is an arithmetic number, because the mean of its divisors is an integer number (1010863602).

Almost surely, 2^4042420043 is an apocalyptic number.

4042420043 is a deficient number, since it is larger than the sum of its proper divisors (1034365).

4042420043 is a wasteful number, since it uses less digits than its factorization.

4042420043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034364.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4042420043 is about 63580.0286489398. The cubic root of 4042420043 is about 1592.9927998648.

Adding to 4042420043 its reverse (3400242404), we get a palindrome (7442662447).

The spelling of 4042420043 in words is "four billion, forty-two million, four hundred twenty thousand, forty-three".