42400243401 has 8 divisors (see below), whose sum is σ = 56573225280. Its totient is φ = 28247045232.

The previous prime is 42400243393. The next prime is 42400243427. The reversal of 42400243401 is 10434200424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42400243401 - 2³ = 42400243393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42400243471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940925 + ... + 4949498.

It is an arithmetic number, because the mean of its divisors is an integer number (7071653160).

Almost surely, 2^42400243401 is an apocalyptic number.

It is an amenable number.

42400243401 is a deficient number, since it is larger than the sum of its proper divisors (14172981879).

42400243401 is a wasteful number, since it uses less digits than its factorization.

42400243401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891855.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 42400243401 its reverse (10434200424), we get a palindrome (52834443825).

The spelling of 42400243401 in words is "forty-two billion, four hundred million, two hundred forty-three thousand, four hundred one".