42400400233 has 4 divisors (see below), whose sum is σ = 42937114240. Its totient is φ = 41863686228.

The previous prime is 42400400191. The next prime is 42400400279. The reversal of 42400400233 is 33200400424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42400400233 - 2²¹ = 42398303081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42400400033) 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 3 ways as a sum of consecutive naturals, for example, 268356885 + ... + 268357042.

It is an arithmetic number, because the mean of its divisors is an integer number (10734278560).

Almost surely, 2^42400400233 is an apocalyptic number.

It is an amenable number.

42400400233 is a deficient number, since it is larger than the sum of its proper divisors (536714007).

42400400233 is an equidigital number, since it uses as much as digits as its factorization.

42400400233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536714006.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 42400400233 its reverse (33200400424), we get a palindrome (75600800657).

The spelling of 42400400233 in words is "forty-two billion, four hundred million, four hundred thousand, two hundred thirty-three".