4042321405 has 16 divisors (see below), whose sum is σ = 4976871984. Its totient is φ = 3150046720.

The previous prime is 4042321399. The next prime is 4042321441. The reversal of 4042321405 is 5041232404.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1360945881 + 2681375524 = 36891^2 + 51782^2 .

It is not a de Polignac number, because 4042321405 - 2¹⁵ = 4042288637 is a prime.

It is a super-3 number, since 3×4042321405³ (a number of 30 digits) contains 333 as substring.

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 4042321405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118767 + ... + 148963.

It is an arithmetic number, because the mean of its divisors is an integer number (311054499).

Almost surely, 2^4042321405 is an apocalyptic number.

It is an amenable number.

4042321405 is a deficient number, since it is larger than the sum of its proper divisors (934550579).

4042321405 is a wasteful number, since it uses less digits than its factorization.

4042321405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30896.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4042321405 is about 63579.2529446517. The cubic root of 4042321405 is about 1592.9798430303.

Adding to 4042321405 its reverse (5041232404), we get a palindrome (9083553809).

The spelling of 4042321405 in words is "four billion, forty-two million, three hundred twenty-one thousand, four hundred five".