40235435421 has 16 divisors (see below), whose sum is σ = 53911066944. Its totient is φ = 26692009344.

The previous prime is 40235435393. The next prime is 40235435441. The reversal of 40235435421 is 12453453204.

It is not a de Polignac number, because 40235435421 - 2⁷ = 40235435293 is a prime.

It is a super-2 number, since 2×40235435421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235435441) 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 15 ways as a sum of consecutive naturals, for example, 514695 + ... + 587691.

It is an arithmetic number, because the mean of its divisors is an integer number (3369441684).

Almost surely, 2^40235435421 is an apocalyptic number.

It is an amenable number.

40235435421 is a deficient number, since it is larger than the sum of its proper divisors (13675631523).

40235435421 is a wasteful number, since it uses less digits than its factorization.

40235435421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73900.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 40235435421 its reverse (12453453204), we get a palindrome (52688888625).

The spelling of 40235435421 in words is "forty billion, two hundred thirty-five million, four hundred thirty-five thousand, four hundred twenty-one".