4042321109 has 4 divisors (see below), whose sum is σ = 4056914604. Its totient is φ = 4027727616.

The previous prime is 4042321091. The next prime is 4042321121. The reversal of 4042321109 is 9011232404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1645924900 + 2396396209 = 40570^2 + 48953^2 .

It is a cyclic number.

It is not a de Polignac number, because 4042321109 - 2¹⁶ = 4042255573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042321009) 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, 7296332 + ... + 7296885.

It is an arithmetic number, because the mean of its divisors is an integer number (1014228651).

Almost surely, 2^4042321109 is an apocalyptic number.

It is an amenable number.

4042321109 is a deficient number, since it is larger than the sum of its proper divisors (14593495).

4042321109 is a wasteful number, since it uses less digits than its factorization.

4042321109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593494.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4042321109 is about 63579.2506168483. The cubic root of 4042321109 is about 1592.9798041482.

The spelling of 4042321109 in words is "four billion, forty-two million, three hundred twenty-one thousand, one hundred nine".