42404243400 has 72 divisors (see below), whose sum is σ = 142407590130. Its totient is φ = 11307797760.

The previous prime is 42404243393. The next prime is 42404243423. The reversal of 42404243400 is 434240424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18010176804 + 24394066596 = 134202^2 + 156186^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 17 ways as a sum of consecutive naturals, for example, 11777157 + ... + 11780756.

Almost surely, 2^42404243400 is an apocalyptic number.

42404243400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42404243400 is an abundant number, since it is smaller than the sum of its proper divisors (100003346730).

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

42404243400 is a wasteful number, since it uses less digits than its factorization.

42404243400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23557935 (or 23557923 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 42404243400 its reverse (434240424), we get a palindrome (42838483824).

The spelling of 42404243400 in words is "forty-two billion, four hundred four million, two hundred forty-three thousand, four hundred".