40423423243 has 16 divisors (see below), whose sum is σ = 48257902080. Its totient is φ = 33107063616.

The previous prime is 40423423241. The next prime is 40423423301. The reversal of 40423423243 is 34232432404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40423423243 - 2¹ = 40423423241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40423423241) 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 15 ways as a sum of consecutive naturals, for example, 19903 + ... + 285031.

It is an arithmetic number, because the mean of its divisors is an integer number (3016118880).

Almost surely, 2^40423423243 is an apocalyptic number.

40423423243 is a deficient number, since it is larger than the sum of its proper divisors (7834478837).

40423423243 is a wasteful number, since it uses less digits than its factorization.

40423423243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266106.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40423423243 its reverse (34232432404), we get a palindrome (74655855647).

The spelling of 40423423243 in words is "forty billion, four hundred twenty-three million, four hundred twenty-three thousand, two hundred forty-three".