11432423421 has 12 divisors (see below), whose sum is σ = 16614812448. Its totient is φ = 7574856264.

The previous prime is 11432423419. The next prime is 11432423467. The reversal of 11432423421 is 12432423411.

It is not a de Polignac number, because 11432423421 - 2¹ = 11432423419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11432423221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3895065 + ... + 3897998.

It is an arithmetic number, because the mean of its divisors is an integer number (1384567704).

Almost surely, 2^11432423421 is an apocalyptic number.

It is an amenable number.

11432423421 is a deficient number, since it is larger than the sum of its proper divisors (5182389027).

11432423421 is a wasteful number, since it uses less digits than its factorization.

11432423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793232 (or 7793229 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 11432423421 its reverse (12432423411), we get a palindrome (23864846832).

The spelling of 11432423421 in words is "eleven billion, four hundred thirty-two million, four hundred twenty-three thousand, four hundred twenty-one".