42004240400 has 60 divisors (see below), whose sum is σ = 103262094672. Its totient is φ = 16410952320.

The previous prime is 42004240393. The next prime is 42004240403. The reversal of 42004240400 is 404240024.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (42004240403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1203854 + ... + 1238253.

Almost surely, 2^42004240400 is an apocalyptic number.

42004240400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42004240400 is an abundant number, since it is smaller than the sum of its proper divisors (61257854272).

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

42004240400 is a wasteful number, since it uses less digits than its factorization.

42004240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442168 (or 2442157 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 42004240400 its reverse (404240024), we get a palindrome (42408480424).

The spelling of 42004240400 in words is "forty-two billion, four million, two hundred forty thousand, four hundred".