42402240404 has 12 divisors (see below), whose sum is σ = 74207281428. Its totient is φ = 21200160000.

The previous prime is 42402240379. The next prime is 42402240421. The reversal of 42402240404 is 40404220424.

It can be written as a sum of positive squares in 2 ways, for example, as 31988037904 + 10414202500 = 178852^2 + 102050^2 .

It is a super-2 number, since 2×42402240404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135647 + ... + 321254.

It is an arithmetic number, because the mean of its divisors is an integer number (6183940119).

Almost surely, 2^42402240404 is an apocalyptic number.

It is an amenable number.

42402240404 is a deficient number, since it is larger than the sum of its proper divisors (31805041024).

42402240404 is a wasteful number, since it uses less digits than its factorization.

42402240404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480106 (or 480104 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42402240404 its reverse (40404220424), we get a palindrome (82806460828).

The spelling of 42402240404 in words is "forty-two billion, four hundred two million, two hundred forty thousand, four hundred four".