42240240404 has 24 divisors (see below), whose sum is σ = 75595229640. Its totient is φ = 20644567424.

The previous prime is 42240240401. The next prime is 42240240421. The reversal of 42240240404 is 40404204224.

It can be written as a sum of positive squares in 4 ways, for example, as 75724804 + 42164515600 = 8702^2 + 205340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240240401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313319 + ... + 427374.

It is an arithmetic number, because the mean of its divisors is an integer number (3149801235).

Almost surely, 2^42240240404 is an apocalyptic number.

It is an amenable number.

42240240404 is a deficient number, since it is larger than the sum of its proper divisors (33354989236).

42240240404 is a wasteful number, since it uses less digits than its factorization.

42240240404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741019 (or 741017 counting only the distinct ones).

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

Adding to 42240240404 its reverse (40404204224), we get a palindrome (82644444628).

The spelling of 42240240404 in words is "forty-two billion, two hundred forty million, two hundred forty thousand, four hundred four".