42040440402 has 32 divisors (see below), whose sum is σ = 88706085120. Its totient is φ = 13245944400.

The previous prime is 42040440401. The next prime is 42040440413. The reversal of 42040440402 is 20404404024.

42040440402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42040440402² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42040440401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365724 + ... + 466727.

It is an arithmetic number, because the mean of its divisors is an integer number (2772065160).

Almost surely, 2^42040440402 is an apocalyptic number.

42040440402 is an abundant number, since it is smaller than the sum of its proper divisors (46665644718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42040440402 is a wasteful number, since it uses less digits than its factorization.

42040440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832918.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 42040440402 its reverse (20404404024), we get a palindrome (62444844426).

The spelling of 42040440402 in words is "forty-two billion, forty million, four hundred forty thousand, four hundred two".