42400404224 has 18 divisors (see below), whose sum is σ = 84635182380. Its totient is φ = 21200201984.

The previous prime is 42400404223. The next prime is 42400404257. The reversal of 42400404224 is 42240400424.

It is a junction number, because it is equal to n+sod(n) for n = 42400404193 and 42400404202.

It is not an unprimeable number, because it can be changed into a prime (42400404223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82813034 + ... + 82813545.

Almost surely, 2^42400404224 is an apocalyptic number.

It is an amenable number.

42400404224 is a deficient number, since it is larger than the sum of its proper divisors (42234778156).

42400404224 is an equidigital number, since it uses as much as digits as its factorization.

42400404224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165626595 (or 165626581 counting only the distinct ones).

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

Adding to 42400404224 its reverse (42240400424), we get a palindrome (84640804648).

The spelling of 42400404224 in words is "forty-two billion, four hundred million, four hundred four thousand, two hundred twenty-four".