40233440421 has 40 divisors (see below), whose sum is σ = 61220211360. Its totient is φ = 26324660448.

The previous prime is 40233440411. The next prime is 40233440509. The reversal of 40233440421 is 12404433204.

It is a happy number.

40233440421 is a `hidden beast` number, since 4 + 0 + 233 + 4 + 4 + 0 + 421 = 666.

It is not a de Polignac number, because 40233440421 - 2⁵ = 40233440389 is a prime.

It is a super-2 number, since 2×40233440421² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40233440411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3066351 + ... + 3079443.

It is an arithmetic number, because the mean of its divisors is an integer number (1530505284).

Almost surely, 2^40233440421 is an apocalyptic number.

It is an amenable number.

40233440421 is a deficient number, since it is larger than the sum of its proper divisors (20986770939).

40233440421 is a wasteful number, since it uses less digits than its factorization.

40233440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13807 (or 13798 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40233440421 its reverse (12404433204), we get a palindrome (52637873625).

The spelling of 40233440421 in words is "forty billion, two hundred thirty-three million, four hundred forty thousand, four hundred twenty-one".